DBpedia – Linked Data Fragments

Matches in DBpedia 2015-10 for { ?s <http://www.w3.org/2000/01/rdf-schema#comment> ?o }

• 1,2-Dichloroethyl_acetate comment "1,2-Dichloroethyl acetate is a chemical compound used in the making of other organic chemicals. It is a liquid which is either white or resembles water.".
• 1,2-Dichloropropane comment "1,2-Dichloropropane is an organic compound classified as a chlorocarbon. It is a colorless, flammable liquid with a sweet odor. it is obtained as a byproduct of the production of epichlorohydrin, which is produced on a large scale.".
• 1,2-Dichlorotetrafluoroethane comment "1,2-Dichlorotetrafluoroethane, or R-114, also known as cryofluorane (INN), is a chlorofluorocarbon (CFC) with the molecular formula ClF2CCF2Cl. Its primary use has been as a refrigerant. It is a non-flammable gas with a sweetish, chloroform-like odor with the critical point occurring at 145.6 °C and 3.26 MPa. When pressurized or cooled, it is a colorless liquid.".
• 1,2-Difluorobenzene comment "1,2-Difluorobenzene, also known as DFB, is an aromatic compound with formula C6H4F2. This colorless liquid is a solvent used in the electrochemical studies of transition metal complexes.".
• 1,2-Diformylhydrazine comment "1,2-Diformylhydrazine is the chemical compound with the formula N2H2(CHO)2. It is a white, water-soluble solid. A related species is the monoformyl, called formic hydrazide (HCON2H3, 624-84-0 ).As verified by X-ray crystallography, it is a planar molecule with N-N, N-C, and C=O distances of 1.38, 1.33 and 1.24 Å, respectively.".
• 1,2-Dihydro-1,2-azaborine comment "1,2-Dihydro-1,2-azaborine is an aromatic chemical compound with properties intermediate between benzene and borazine. Its chemical formula is C4BNH6. It resembles a benzene ring, except that two adjacent carbons are replaced by nitrogen and boron, respectively.After decades of failed attempts, the compound was synthesized in 2008 and reported in January 2009.One of the synthetic steps is a ring-closing metathesis (RCM) reaction:1,2-Dihydro-1,2-azaborine synthesis Marwitz et al. 2009".
• 1,2-Diiodoethane comment "1,2-Diiodoethane is an organoiodine compound.".
• 1,2-Dimethoxybenzene comment "1,2-Dimethoxybenzene, commonly known as veratrole, is an organic compound with the formula C6H4(OCH3)2. It is a colorless liquid, with a pleasant odor and slight solubility in water. It is the dimethyl ether derived from pyrocatechol.".
• 1,2-Dimethylcyclopropane comment "1,2-Dimethylcyclopropane is a cycloalkane consisting of a cyclopropane ring and two methyl groups. It has three geometric isomers: two (E-) and one (Z-), depending on the position of its two methyl groups. As with other cyclopropanes, ring tension results in a relatively unstable compound.".
• 1,2-Dimethylhydrazine comment "1,2-Dimethylhydrazine, or symmetrical dimethylhydrazine, is one of the two isomers of dimethylhydrazine. It is a potent carcinogen that acts as a DNA methylating agent. It is used to induce colon tumors in experimental animals.".
• 1,2-Dioxane comment "1,2-Dioxane or o-dioxane is a chemical compound with the molecular formula C4H8O2.".
• 1,2-Dioxetane comment "The chemical substance 1,2-dioxetane (1,2-dioxacyclobutane) is an heterocyclic organic compound with formula C2O2H4, containing a ring of two adjacent oxygen atoms and two adjacent carbon atoms.".
• 1,2-Dioxetanedione comment "The chemical compound 1,2-dioxetanedione, or 1,2-dioxacyclobutane-3,4-dione, often called peroxyacid ester, is an unstable oxide of carbon (an oxocarbon) with formula C2O4.".
• 1,2-Dioxin comment "1,2-Dioxin is a heterocyclic, organic, antiaromatic compound with the chemical formula C4H4O2. It is an isomeric form of 1,4-dioxin (or p-dioxin).Due to its peroxide-like characteristics, 1,2-dioxin is very unstable and has not been isolated. Even substituted derivatives are very labile, e.g. 1,4-diphenyl-2,3-benzodioxin. Indeed, in 1990, 3,6-bis(p-tolyl)-1,2-dioxin was wrongly accounted as the first stable derivative.".
• 1,2-Dithietane comment "1,2-Dithietane is a dithietane.".
• 1,2-Dithiole comment "In organosulfur chemistry, a 1,2-dithiole is a type of heterocycle. The parent of this class of compounds is 1,2-dithiacyclopentene-3-thione. The anticancer drug oltipraz is a dithiole.↑".
• 1,2-Ethanedithiol comment "1,2-Ethanedithiol is a colorless liquid with the formula C2H4(SH)2. It has a very characteristic odor which is compared by many people to rotten cabbage. It is a common building block in organic synthesis and an excellent ligand for metal ions.".
• 1,2-Naphthoquinone comment "1,2-Naphthoquinone or ortho-naphthoquinone is a polycyclic aromatic organic compound with formula C10H6O2.This double ketone (quinone) is a reactive metabolite of naphthalene and is found in diesel exhaust particles. The accumulation of this toxic metabolite in rats from doses of naphthalene has been shown to cause eye damage, including the formation of cataracts.".
• 1,2-Propanedithiol comment "1,2-Propanedithiol, sometimes called 1,2-dimercaptopropane, is a thiol with the formula HSCH2CH(SH)CH3. This colorless, intensely odorous liquid is the simplest chiral dithiol. Related dithiols include 1,2-ethanedithiol, 2,3-dimercapto-1-propanesulfonic acid, and 1,3-propanedithiol. It is generated by the addition of H2S to the related episulfide, CH3CHCH2S.Refractive index = 1.531-1.541".
• 1,2-Wittig_rearrangement comment "A 1,2-Wittig rearrangement is a categorization of chemical reactions in organic chemistry, and consists of a 1,2-rearrangement of an ether with an alkyllithium compound. The reaction is named for Nobel Prize winning chemist Georg Wittig.The intermediate product is an alkoxy lithium salt and the final product an alcohol. When R2 is a good leaving group and electron withdrawing functional group such as a cyanide (CN) group, this group is eliminated and the corresponding ketone is formed.".
• 1,2-alpha-mannosidase comment "1,2-alpha-mannosidase may refer to: alpha-Mannosidase, an enzyme Mannosyl-oligosaccharide 1,2-alpha-mannosidase, an enzyme".
• 1,2-dioleoyl-sn-glycerophosphoethanolamine comment "1,2-dioleoyl-sn-glycerophosphoethanolamine is a non-bilayer lipid that adopts non-lamellar reverse hexagonal structures.".
• 1,2-rearrangement comment "A 1,2-rearrangement or 1,2-migration or 1,2-shift or Whitmore 1,2-shift is an organic reaction where a substituent moves from one atom to another atom in a chemical compound. In a 1,2 shift the movement involves two adjacent atoms but moves over larger distances are possible. In the example below the substituent R moves from carbon atom C2 to C3.The rearrangement is intramolecular and the starting compound and reaction product are structural isomers.".
• 1,227_QI_Facts_to_Blow_Your_Socks_Off comment "1,227 QI Facts To Blow Your Socks Off is the sixth in a series of books based on the intellectual British panel game QI, written by series-creator John Lloyd, director of research John Mitchinson, and chief researcher James Harkin. Published on 1 November 2012 (9 September 2013 in the US), it is a trivia book containing 1,227 facts collected during the making of the series, which had been ten years in the making at the time of publication.".
• 1,3,2,4-Dithiadiphosphetane_2,4-disulfides comment "1,3,2,4-Dithiadiphosphetane 2,4-disulfides are a class of four-membered ring compounds which contain a P2S2 ring, many of these compounds are able to act as sources of the dithiophosphine ylides.".
• 1,3,3,3-Tetrafluoropropene comment "1,3,3,3-Tetrafluoropropene (HFO-1234ze) is a hydrofluoroolefin. It was developed as a "fourth generation" refrigerant to replace R-134a and as a blowing agent for foam and aerosol applications. The use of R-134a is being phased out because of its high global-warming potential. HFO-1234ez has zero ozone-depletion potential and a low global-warming potential (GWP = 6).".
• 1,3,5-Triazido-2,4,6-trinitrobenzene comment "1,3,5-Triazido-2,4,6-trinitrobenzene, also known as TATNB (triazidotrinitrobenzene) and TNTAZB (trinitrotriazidobenzene), is an aromatic high explosive composed of a benzene ring with three azido groups (N3) and three nitro groups (NO2) alternating around the ring. It has chemical formula C6(N3)3(NO2)3. Its velocity of detonation is 7,350 meters per second, comparable to TATB and CPN (CycloPropenium Nitrate).".
• 1,3,5-Triazine comment "1,3,5-triazine, also called s-triazine, is an organic chemical compound with the formula (HCN)3. It is a six-membered heterocyclic aromatic ring, one of several isomeric triazines. S-triazine and its derivatives are useful in a variety of applications.".
• 1,3,5-Trichlorobenzene comment "1,3,5-Trichlorobenzene is an organochlorine compound. It is one of the three isomers of trichlorobenzene. Being more symmetrical than the other isomers, it exists as colourless crystals whereas the other isomers are liquids at room temperature.It is not formed upon chlorination of benzene. Instead it is prepared by the Sandmeyer reaction from 3,5-dichloroaniline.".
• 1,3,5-Trinitrobenzene comment "1,3,5-Trinitrobenzene is a nitrated benzene-derivative that is classified as a high explosive, being moderately explosive in liquid form and extremely explosive in its dry powder form. It has a clear to light yellow sludgy appearance. It will detonate under strong shock. High temperatures, whether by sudden heating of any quantity, or by the accumulation of heat when large quantities are burning, will also cause detonation.".
• 1,3,5-Trioxane comment "1,3,5-Trioxane, sometimes also called trioxane or trioxin, is a chemical compound with molecular formula C3H6O3. It is a white solid with a chloroform-like odor. It is a stable cyclic trimer of formaldehyde, and one of the three trioxane isomers; its molecular backbone consists of a six-membered ring with three carbon atoms alternating with three oxygen atoms.".
• 1,3,5-Trioxanetrione comment "The chemical compound 1,3,5-trioxanetrione, or 1,3,5-trioxacyclohexane-2,4,6-trione is a hypothetical oxide of carbon with formula C3O6. It can be considered a cyclic trimer of carbon dioxide (CO2) or as a triple ketone of 1,3,5-trioxane (1,3,5-trioxacyclohexane).Theoretical calculations indicate that the compound is unstable at room temperature (half-life less than 8 seconds); but may be stable at -196 °C.".
• 1,3,5-Trithiane comment "1,3,5-Trithiane is the chemical compound with the formula (CH2S)3. This heterocycle is the cyclic trimer of the otherwise unstable species thioformaldehyde. It consists of a six-membered ring with alternating methylene bridges and thioether groups. It is prepared by treatment of formaldehyde with hydrogen sulfide.Trithiane is a building block molecule in organic synthesis, being a masked source of formaldehyde.".
• 1,3,6-Trigalloyl_glucose comment "1,3,6-Trigalloyl glucose is an gallotannin. It can be found in Paeonia lactiflora and Terminalia chebula.".
• 1,3,7-Trimethyluric_acid comment "1,3,7-Trimethyluric acid, also referred to as trimethyluric acid and 8-oxy-caffeine, is a purine alkaloid that is produced in some plants and occurs as a minor metabolite of caffeine in humans. The enzymes that metabolize caffeine into 1,3,7-trimethyluric acid in humans include CYP1A2, CYP2E1, CYP2C8, CYP2C9, and CYP3A4.".
• 1,3,8-Trihydroxyanthraquinone comment "1,3,8-Trihydroxyanthraquinone is an organic compound. It is one of many trihydroxyanthraquinone isomers, formally derived from anthraquinone by replacement of three hydrogen atoms by hydroxyl (OH) groups.The compound occurs in some microorganisms and in alcoholic extracts of the wood of the South American plant Senna reticulata (mangerioba grande or maria mole in Portuguese), used in the local folk medicine for liver problems and rheumatism.".
• 1,3-Benzodioxole comment "1,3-Benzodioxole (1,2-methylenedioxybenzene) is an aromatic ring and a heterocyclic compound containing the methylenedioxy functional group. 1,3-Benzodioxole is synthesized from catechol with disubstituted halomethanes. 1,3-Benzodioxole is useful in gemological simulant detection. It is precursor for perfumes, insecticides, and pharmaceuticals.".
• 1,3-Benzodioxolyl-N-ethylbutanamine comment "Ethylbenzodioxolylbutanamine (EBDB; Ethyl-J) is a lesser-known entactogen, stimulant, and psychedelic. It is the N-ethyl analogue of benzodioxylbutanamine (BDB; "J"), and also the α-ethyl analogue of methylenedioxyethylamphetamine (MDEA; "Eve").EBDB was first synthesized by Alexander Shulgin. In his book PiHKAL (Phenethylamines i Have Known And Loved), the minimum dosage consumed was 90 mg, and the duration is unknown.".
• 1,3-Benzodioxolyl-N-ethylpentanamine comment "N-Ethyl-1,3-benzodioxolylpentanamine (EBDP; Ethyl-K; 3,4-methylenedioxy-N-ethyl-α-propylphenethylamine) is a psychoactive drug and member of the phenethylamine chemical class which acts as an entactogen, psychedelic, and stimulant. It is the N-ethyl analog of 1,3-benzodioxolylpentanamine (BDP; K). Ethyl-K was first synthesized by Alexander Shulgin. In his book PiHKAL ("Phenethylamines i Have Known And Loved"), the minimum dosage is listed as 40 mg and the duration is unknown.".
• 1,3-Benzodioxolyl-N-methylbutanamine comment "1,3-Benzodioxolyl-N-methylbutanamine (N-methyl-1,3-benzodioxolylbutanamine, MBDB) is an entactogen of the phenethylamine chemical class. It is known by the street names Eden and Methyl-J. MBDB is a closely related chemical analogue of MDMA, with the only difference between the two molecules being an ethyl group instead of a methyl group attached to the alpha carbon. It has IC50 values of 784 nM against 5-HT, 7825 nM against dopamine, and 1233 nM against norepinephrine.".
• 1,3-Benzodioxolyl-N-methylpentanamine comment "N-Methyl-1,3-benzodioxolylpentanamine (MBDP; Methyl-K, UWA-091), also known as 3,4-methylenedioxy-α-propyl-N-methylphenethylamine, is a psychoactive drug of the phenethylamine chemical class. It is the N-methyl analogue of 1,3-benzodioxolylpentanamine (BDP; K). Methyl-K was first synthesized by Alexander Shulgin ("Sasha" Shulgin). In his book PiHKAL ("Phenethylamines i Have Known And Loved"), the minimum dosage is listed as 100 mg, and the duration is unknown.".
• 1,3-Benzodioxolylbutanamine comment "1,3-Benzodioxolylbutanamine, 3,4-Methylenedioxybutanphenamine, MDB, (BDB; J; 3,4-methylenedioxy-α-ethylphenethylamine) is an entactogenic drug of the phenethylamine chemical class. It is the α-ethyl analogue of methylenedioxyphenethylamine (MDPEA) and MDA.BDB was first synthesized by Alexander Shulgin. In his book PiHKAL (Phenethylamines i Have Known And Loved), the dosage range is listed as 150–230 mg, and the duration is listed as 4–8 hours. BDB produces entactogenic, MDMA-like effects.".
• 1,3-Beta-glucan_synthase comment "1,3-Beta-glucan synthase is a glucosyltransferase enzyme involved in the generation of beta-glucan in fungi. It serves as a pharmacological target for antifungal drugs such as caspofungin, anidulafungin, and micafungin.The biosynthesis of disaccharides, oligosaccharides, and polysaccharides involves the action of hundreds of different glycosyltransferases.".
• 1,3-Bis(dicyanomethylene)squarate comment "1,3-Bis(dicyanomethylene)squarate is a divalent anion with chemical formula C10N4O2−2 or ((N≡C-)2C=)2(C4O2)2−. It is one of the pseudo-oxocarbon anions, as it can be described as a derivative of the squarate oxocarbon anion C4O2−4 through the replacement of two opposite oxygen atoms by dicyanomethylene groups =C(-C≡N)2.".
• 1,3-Bis(diphenylphosphino)propane comment "1,3-Bis(diphenylphosphino)propane (dppp) is an organophosphorus compound with the formula (CH2)3(P(C6H5)2)2. The compound is a white solid that is soluble in organic solvents. It is slightly air-sensitive, degrading in air to the phosphine oxide. It is classified as a diphosphine ligand in coordination chemistry and homogeneous catalysis.".
• 1,3-Bisphosphoglyceric_acid comment "1,3-Bisphosphoglyceric acid (1,3-Bisphosphoglycerate or 1,3BPG) is a 3-carbon organic molecule present in most, if not all, living organisms. It primarily exists as a metabolic intermediate in both glycolysis during respiration and the Calvin cycle during photosynthesis. 1,3BPG is a transitional stage between glycerate 3-phosphate and glyceraldehyde 3-phosphate during the fixation/reduction of CO2.".
• 1,3-Butadiene comment "1,3-Butadiene is a simple conjugated diene with the formula C4H6 . It is an important industrial chemical used as a monomer in the production of synthetic rubber. The word butadiene usually refers to 1,3–butadiene which has the structure H2C=CH—CH=CH2.Although butadiene breaks down quickly in the atmosphere, it is nevertheless found in ambient air in urban and suburban areas as a consequence of its constant emission from motor vehicles.".
• 1,3-Butanediol comment "1,3-Butanediol (also known as 1,3-butylene glycol, butane-1,3-diol, or 1,3-dihydroxybutane) is an organic chemical, an alcohol. It is commonly used as a solvent for food flavouring agents and is a co-monomer used in certain polyurethane and polyester resins. It is one of four stable structural isomers of butanediol. In biology, 1,3-butanediol is used as a hypoglycaemic agent. 1,3-Butanediol can be converted into β-hydroxybutyrate and serve as a substrate for brain metabolism.".
• 1,3-Cycloheptadiene comment "1,3-Cycloheptadiene is a highly flammable cycloalkene that occurs as a colorless clear liquid.".
• 1,3-Cyclohexadiene comment "1,3-Cyclohexadiene is an organic compound with the formula (CH2)2(CH)4. It is a colorless, flammable liquid. Its refractive index is 1.475 (20 °C, D). A naturally occurring derivative of 1,3-cyclohexadiene is terpinene, a component of pine oil.".
• 1,3-DCP comment "The chemical abbreviation 1,3-DCP may stand for: 1,3-Dichloropropane-2-ol 1,3-Dichloropropane 1,3-Dichloropropene".
• 1,3-Dehydroadamantane comment "1,3-Dehydroadamantane, formally tetracyclo[3.3.1.13,7.01,3]decane, is an organic compound with formula C10H14, which can be obtained from adamantane by removal of two hydrogen atoms to create an internal bond. It is a polycyclic hydrocarbon, and can be viewed also as being derived from [1.3.3]propellane by addition of a methylene bridge between the two larger rings. Like other small-ring propellanes, this compound is substantially strained and unstable.".
• 1,3-Diaminopropane comment "1,3-Diaminopropane, also known as trimethylenediamine, is a simple diamine with the formula (CH2)3(NH2)2. A colourless liquid with a fishy odor, it is soluble in water and many polar organic solvents. It is isomeric with 1,2-diaminopropane. Both are building blocks in the synthesis of heterocycles, such as those used in textile finishing, and coordination complexes.".
• 1,3-Diazepine comment "1,3-Diazepine is a diazepine.".
• 1,3-Dibromopropane comment "1,3-Dibromopropane is a halogenated hydrocarbon. When at room temperature, it is a colorless to light-brown liquid. Synthetically, it is very useful to form C3-bridged compounds such as through C-N coupling reactions.1,3-Dibromopropane was used in the first cyclopropane synthesis in 1881, known as the Freund reaction.".
• 1,3-Dichlorobenzene comment "1,3-Dichlorobenzene is an organic compound with the formula C6H4Cl2. It is the least common of the three isomers of dichlorobenzene, it is a colorless liquid that is insoluble in water. It is produced as a minor byproduct of the chlorination of benzene, but can also be prepared in a directed manner by the Sandmeyer reaction of 3-chloroaniline. It also arises from the isomerization of the other dichlorobenzenes at high temperature.".
• 1,3-Dichloropropane comment "1,3-Dichloropropane is a compound of chlorine, hydrogen, and carbon.".
• 1,3-Dichloropropene comment "1,3-Dichloropropene, sold under diverse trade names, is an organochlorine compound. It is colorless liquid with a sweet smell. It dissolves in water and evaporates easily. It is used mainly in farming as a pesticide, specifically as a preplant fumigant and nematicide. It is widely used in the US and other countries, but is in the process of being phased out in the European Union.".
• 1,3-Difluoro-2-propanol comment "1,3-Difluoro-2-propanol is a metabolic poison which disrupts the citric acid cycle and is used as a rodenticide, similar to sodium fluoroacetate. It is the main ingredient (along with 1-chloro-3-fluoro-2-propanol) in the rodenticide product Gliftor which was widely used in the former USSR.".
• 1,3-Dihydroxyanthraquinone comment "1,3-Dihydroxyanthraquinone, also called purpuroxanthin or xanthopurpurin, is an organic compound with formula C14H8O4 that occurs in the plant Rubia cordifolia (Indian madder). It is one of ten dihydroxyanthraquinone isomers. Its molecular structure can be viewed as being derived from anthraquinone by replacement of two hydrogen atoms (H) by hydroxyl groups (-OH).".
• 1,3-Diisocyanatobenzene comment "1,3-Diisocyanatobenzene is an aromatic isocyanate with the chemical formula C8H4N2O2.".
• 1,3-Dimethyl-2-imidazolidinone comment "1,3-Dimethyl-2-imidazolidinone (DMI) is a cyclic urea used as a high-boiling polar aprotic solvent. It is colourless, transparent, highly polar and has high thermal and chemical stability. It is a homolog of the related solvent DMPU. In many applications, DMI (as well as DMPU) can be used as a substitute or replacement for the carcinogenic solvent HMPA.DMI has a boiling point of 225 °C, a flash point of 120 °C and a melting point of 8.2 °C.".
• 1,3-Dimethylbutylamine comment "1,3-Dimethylbutylamine (1,3-DMBA), or simply dimethylbutylamine (DMBA), is a stimulant drug structurally related to methylhexanamine (1,3-dimethylamylamine (1,3-DMAA)) where a butyl group replaces the amyl group. It is also known as AMP Citrate (4-amino-2-methylpentane citrate). It has been identified as an unapproved ingredient in some over-the-counter dietary supplements, in which it is used in an apparent attempt to avoid laws prohibiting the use of methylhexanamine. The U.S.".
• 1,3-Dioxane comment "1,3-Dioxane or m-dioxane is a chemical compound with the molecular formula C4H8O2.1,3-Dioxanes and 1,3-dioxolanes are prepared from carbonyl compounds with 1,3-propanediol or 1,2-ethanediol in the presence of Brönsted or Lewis acid catalysts.".
• 1,3-Dioxetane comment "1,3-Dioxetane (1,3-dioxacyclobutane) is a heterocyclic organic compound with formula C2O2H4, whose backbone is a four-member ring of alternating oxygen and carbon atoms.It can be viewed as a dimer of formaldehyde (COH2).".
• 1,3-Dioxetanedione comment "The chemical compound 1,3-dioxetanedione, or 1,3-dioxacyclobutane-2,4-dione is a hypothetical oxide of carbon with formula C2O4. It can be considered a cyclic dimer of carbon dioxide (CO2) or as a double ketone of 1,3-dioxetane (1,3-dioxacyclobutane).Theoretical calculations indicate that the compound is extremely unstable at room temperature (half-life of less than 1.1 μs); but may be stable at −196 °C.".
• 1,3-Dipolar_cycloaddition comment "The 1,3-dipolar cycloaddition is a chemical reaction between a 1,3-dipole and a dipolarophile to form a five-membered ring. The earliest 1,3-dipolar cycloadditions were described in the late 19th century to the early 20th century, following the discovery of 1,3-dipoles. Mechanistic investigation and synthetic application were established in the 1960s, primarily through the work of Rolf Huisgen.".
• 1,3-Dithietane comment "1,3-Dithietane is a dithietane.".
• 1,3-Indandione comment "1,3-Indandione (indanedione) is an organic compound with the molecular formula C9H6O2. Chemically, it is a β-diketone. In standard conditions it is referred to in different sources as either a colorless or yellowish, green, or (most commonly) yellow solid.".
• 1,3-Propane_sultone comment "1,3-Propane sultone is the organosulfur compound with the formula (CH2)3SO3. It is a cyclic sulfonate ester, a class of compounds called sultones. It is a readily melting colorless solid.Typical of activated esters, 1,3-propane sultone is an alkylating agent. It readily hydrolyzes to the hydroxysulfonic acid.Hydrolysis of Propane-1,3-sultone1,3-Propane sultone is toxic, carcinogenic, mutagenic, and teratogenic.".
• 1,3-Propanediol comment "1,3-Propanediol is the organic compound with the formula CH2(CH2OH)2. This three-carbon diol is a colorless viscous liquid that is miscible with water.".
• 1,3-Propanedithiol comment "1,3-Propanedithiol is the chemical compound with the formula HSCH2CH2CH2SH. This dithiol is a useful reagent in organic synthesis. This liquid, which is readily available commercially, has an intense stench.".
• 1,3-Thiazepine comment "1,3-Thiazepine is a thiazepine.".
• 1,3-alpha-L-fucosidase comment "In enzymology, a 1,3-alpha-L-fucosidase (EC 3.2.1.111) is an enzyme that catalyzes the chemical reaction of cleaving the 1,3-linkages between alpha-L-fucose and N-acetylglucosamine residues in glycoproteins.This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is 3-alpha-L-fucosyl-N-acetylglucosaminyl-glycoprotein fucohydrolase. This enzyme is also called almond emulsin fucosidase I.".
• 1,3-dipole comment "In organic chemistry, a 1,3-dipolar compound or 1,3-dipole is a dipolar compound with delocalized electrons and a separation of charge over three atoms. They are reactants in 1,3-dipolar cycloadditions.Known 1,3-dipoles are: Azides Ozone Nitro compounds Diazo compounds Some oxides Azoxide compounds Carbonyl oxides (Criegee zwitterions) Nitrile oxides Nitrous oxide Nitrones Some imines: Azomethine imine Nitrilimines Carbonyl imines Some ylides Azomethine ylide Nitrile ylide Carbonyl ylide↑ ↑ ↑ ↑".
• 1,4,2-Dithiazole comment "1,4,2-Dithiazole is a heterocyclic compound consisting of an unsaturated five-membered ring containing two carbon atoms, one nitrogen atom, and two sulfur atoms.".
• 1,4,6-Androstatriene-3,17-dione comment "1,4,6-Androstatriene-3,17-dione (ATD) is a potent irreversible aromatase inhibitor that inhibits estrogen biosynthesis by permanently binding and inactivating aromatase in adipose and peripheral tissue. It is used to control estrogen synthesis.ATD is present in some over-the-counter bodybuilding supplements as well as Topical ATD solutions that work transdermally. While not banned, ATD may cause positive urinalysis results leading to disqualification from competitive sports.".
• 1,4,7-Triazacyclononane comment "1,4,7-Triazacyclononane, known as "TACN" which is pronounced "tack-en," is a cyclic organic compound with the formula C6H12(NH)3. TACN is derived, formally speaking, from cyclononane by replacing three equidistant CH2 groups with NH groups. TACN is one of the oligomers derived from aziridine, C2H4NH. Other members of the series include piperazine, C4H8(NH)2, and the cyclic tetramer 1,4,7,10-tetraazacyclododecane.".
• 1,4,7-Trithiacyclononane comment "1,4,7-Trithiacyclononane, also called 9-ane-S3, is the heterocyclic compound with the formula (CH2CH2S)3. This cyclic thioether is most often encountered as a tridentate ligand in coordination chemistry.9-ane-S3 forms complexes with many metal ions, including those considered hard, such as copper(II) and iron(II). Most of its complexes have the formula [M(9-ane-S3)2]2+ and are octahedral. The point group of [M(9-ane-S3)2]2+ is S6.".
• 1,4-Benzodioxine comment "1,4-Benzodioxine, in chemistry, especially organic chemistry, is an aromatic ring.".
• 1,4-Benzoquinone comment "1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C6H4O2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic. This six-membered ring compound is the oxidized derivative of 1,4-hydroquinone.".
• 1,4-Butanediol comment "1,4-Butanediol, colloquially known as BD, is the organic compound with the formula HOCH2CH2CH2CH2OH. This colorless viscous liquid is derived from butane by placement of alcohol groups at each end of the chain. It is one of four stable isomers of butanediol.".
• 1,4-Butynediol comment "1,4-Butynediol is an organic compound that is an alkyne and a diol. It is a colourless, hygroscopic solid that is soluble in water and polar organic solvents. It is a commercially significant compound in its own right and as a precursor to other products.".
• 1,4-Cycloheptadiene comment "1,4-Cycloheptadiene is a highly flammable cycloalkene that occurs as a colorless clear liquid.".
• 1,4-Cyclohexadiene comment "1,4-Cyclohexadiene is an organic compound with the formula C6H8. It is a colourless, flammable liquid that is of academic interest as a prototype of a large class of related compounds called terpenoids, an examples being γ-terpinene. An isomer exists of this compound, 1,3-cyclohexadiene.".
• 1,4-Cyclohexanedione comment "1,4-Cyclohexanedione is an organic compound. This tan or yellow crystalline solid is one of the three isomeric cyclohexanediones. This particular diketone is used as a building block in the synthesis of more complex molecules.".
• 1,4-Diamino-2,3-dihydroanthraquinone comment "1,4-Diamino-2,3-dihydroanthraquinone is an anthraquinone dye used with Disperse Red 9 in colored smoke to introduce a violet color. It is also used in dyes and marine flares.".
• 1,4-Diazepine comment "1,4-Diazepine is a diazepine. It is a core element in the structure of benzodiazepines.".
• 1,4-Dibromobenzene comment "1,4-Dibromobenzene (p-dibromobenzene) is an organic compound that is solid at room temperature. This compound has two bromine atoms (bromo substituents) off the central benzene ring."Melting Point: 83.37°CBoiling Point: 220.40°CPractically insoluble in waterSoluble in 70 parts alcoholSoluble in Benzene, Chloroform and very soluble in Ether" (Merck Index, 14th Ed.)^3".
• 1,4-Dichloro-2-nitrobenzene comment "1,4-Dichloro-2-nitrobenzene is an organic compound with the formula C6H3Cl2NO2. One of several isomers of dichloronitrobenzene, it is a colorless solid that is insoluble in water. It is produced by nitration of 1,4-dichlorobenzene. It is a precursor to many derivatives of commercial interest. Hydrogenation gives 1,4-dichloroaniline.".
• 1,4-Dichlorobenzene comment "1,4-Dichlorobenzene (p-DCB or para-dichlorobenzene, sometimes abbreviated as PDB or para) is an organic compound with the formula C6H4Cl2. This colorless solid has a strong odor. In terms of its structure, the molecule consists of two chlorine atoms substituted for hydrogen at opposing sites on a benzene ring. p-DCB is used as a pesticide and a deodorant, most familiarly in mothballs in which it is a replacement for the more traditional naphthalene.".
• 1,4-Dichlorobut-2-ene comment "1,4-Dichlorobut-2-ene is a chlorinated butene. It is an intermediate in the industrial production of chloroprene, and the main impurity in technical grade chloroprene. The (E)-isomer is also one of the starting materials for Birman's total synthesis of the poriferic natural product sceptrin.".
• 1,4-Dihydroxyanthraquinone comment "1,4-Dihydroxyanthraquinone, also called quinizarin or Solvent Orange 86, is an organic compound derived from anthroquinone. Quinizarin is an orange or red-brown crystalline powder. It is formally derived from anthraquinone by replacement of two hydrogen atoms by hydroxyl (OH) groups. It is one of ten dihydroxyanthraquinone isomers and occurs in small amounts (as a glycoside) in the root of the madder plant, Rubia tinctorum.".
• 1,4-Dimethoxybenzene comment "1,4-Dimethoxybenzene is an organic compound with the formula C6H4(OCH3)2. It is one of three isomers of dimethoxybenzene. It is a white solid with an intensely sweet floral odor. It is produced by several plant species.It is prepared by methylation of para-hydroquinone.".
• 1,4-Dioxane comment "1,4-Dioxane, often simply called dioxane because the 1,2 and 1,3 isomers of dioxane are rare, is a heterocyclic organic compound. It is a colorless liquid with a faint sweet odor similar to that of diethyl ether. It is classified as an ether. Dioxane is used mainly as a stabilizer for the solvent trichloroethane. It is an occasionally used solvent for a variety of practical applications as well as in the laboratory.".
• 1,4-Dioxene comment "1,4-Dioxene is an organic compound with the formula (C2H4)(C2H2)O2. The compound is derived from dioxane by dehydrogenation. It is a colourless liquid.".
• 1,4-Dioxin comment "1,4-Dioxin (also referred as dioxin or p-dioxin) is a heterocyclic, organic, non-aromatic compound with the chemical formula C4H4O2. There is an isomeric form of 1,4-dioxin, 1,2-dioxin (or o-dioxin). 1,2-Dioxin is very unstable due to its peroxide-like characteristics.The term “dioxin” is most commonly used for a family of derivatives of dioxin, known as polychlorinated dibenzodioxins (PCDDs).".
• 1,4-Naphthoquinone comment "1,4-Naphthoquinone or para-naphthoquinone is an organic compound derived from naphthalene. Several isomeric naphthoquinones are known, notably 1,2-naphthoquinone. 1,4-Naphthoquinone forms volatile yellow triclinic crystals and has a sharp odor similar to benzoquinone. It is almost insoluble in cold water, slightly soluble in petroleum ether, and more soluble in polar organic solvents. In alkaline solutions it produces a reddish-brown color. Vitamin K is a derivative of 1,4-naphthoquinone.".
• 1,4-Thiazepine comment "1,4-Thiazepine is a thiazepine. Diltiazem is based upon this structure.".
• 1,4-a-glucan_6-a-glucosyltransferase comment "In enzymology, a 1,4-alpha-glucan 6-alpha-glucosyltransferase (EC 2.4.1.24) is an enzyme that catalyzes the chemical reaction that transfers an alpha-D-glucosyl residue in a 1,4-alpha-D-glucan to the primary hydroxyl group of glucose or 1,4-alpha-D-glucan.This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is 1,4-alpha-D-glucan:1,4-alpha-D-glucan(D-glucose) 6-alpha-D-glucosyltransferase.".

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