Building Blocks
Sous-catégories appartenant à la catégorie "Building Blocks"
- Acides boroniques et dérivés de l'acide boronique(5.778 produits)
- Building Blocks Chiraux(1.243 produits)
- Building Blocks Hydrocarbonés(6.099 produits)
- Building Blocks organiques(61.038 produits)
205376 produits trouvés pour "Building Blocks"
[1-(4-Aminophenyl)cyclopropyl]methanol hydrochloride
CAS :Versatile small molecule scaffoldFormule :C10H14ClNODegré de pureté :Min. 95%Masse moléculaire :199.7 g/mol(1,2,3,6-Tetrahydropyridin-4-yl)methanol hydrochloride
CAS :Versatile small molecule scaffold
Formule :C6H12ClNODegré de pureté :Min. 95%Masse moléculaire :149.6 g/mol3-(Aminomethyl)-2,2-difluoropentane hydrochloride
CAS :Versatile small molecule scaffoldFormule :C6H14ClF2NDegré de pureté :Min. 95%Masse moléculaire :173.6 g/mol2-(Oxan-4-yl)morpholine hydrochloride
CAS :Versatile small molecule scaffold
Formule :C9H18ClNO2Degré de pureté :Min. 95%Masse moléculaire :207.7 g/mol1-[(1-Aminopropan-2-yl)oxy]-2-bromobenzene
CAS :Versatile small molecule scaffold
Formule :C9H12BrNODegré de pureté :Min. 95%Masse moléculaire :230.1 g/mol4-(4-Fluorophenyl)-2-fluorobenzoic acid
CAS :Versatile small molecule scaffold
Formule :C13H8F2O2Degré de pureté :Min. 95%Masse moléculaire :234.2 g/mol3-[(3-Methoxypropyl)carbamoyl]propanoic acid
CAS :Versatile small molecule scaffold
Formule :C8H15NO4Degré de pureté :Min. 95%Masse moléculaire :189.21 g/mol3-Methyl-6-oxopiperidine-3-carbonitrile
CAS :Versatile small molecule scaffoldFormule :C7H10N2ODegré de pureté :Min. 95%Masse moléculaire :138.17 g/mol2-Bromo-4-tert-butyl-1-methyl-benzene
CAS :2-Bromo-4-tert-butyl-1-methyl-benzene (2BTMB) is a congener of polychlorinated biphenyls (PCBs). It is an oily liquid that is insoluble in water. 2BTMB is metabolized by the liver, and has been found in the blood, adipose tissue, and eggs of salmonids. 2BTMB has shown to have physicochemical properties that are similar to other PCB congeners. The toxicity of 2BTMB is largely unknown because it has not been extensively studied. 2BTMB can magnify up the food chain through bioaccumulation and biomagnification.
Formule :C11H15BrDegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :227.14 g/mol2-[(2-Methyl-1H-indol-3-yl)sulfanyl]ethan-1-amine
CAS :Versatile small molecule scaffoldFormule :C11H14N2SDegré de pureté :Min. 95%Masse moléculaire :206.31 g/molEthyl 2-(5-acetyl-1-methyl-1H-pyrrol-2-yl)-2,2-difluoroacetate
CAS :Versatile small molecule scaffoldFormule :C11H13F2NO3Degré de pureté :Min. 95%Masse moléculaire :245.22 g/molMethyl 2-iodo-5-(trifluoromethyl)benzoate
CAS :Versatile small molecule scaffold
Formule :C9H6F3IO2Degré de pureté :Min. 95%Masse moléculaire :330.04 g/molRef: 3D-LAC67848
Produit arrêté6-bromo-4-chloropyridine-3-carbaldehyde
CAS :Versatile small molecule scaffold
Formule :C6H3BrClNODegré de pureté :Min. 95%Masse moléculaire :220.5 g/mol2-Chloro-5-hydroxyisonicotinaldehyde
CAS :Versatile small molecule scaffoldFormule :C6H4ClNO2Degré de pureté :Min. 95%Masse moléculaire :157.55 g/molRef: 3D-KSB80453
Produit arrêté(Cyclohept-2-en-1-yl)methanamine hydrochloride
CAS :Versatile small molecule scaffold
Formule :C8H16ClNDegré de pureté :Min. 95%Masse moléculaire :161.7 g/mol1-(4-Thiophen-2-yl-phenyl)-ethanone
CAS :Versatile small molecule scaffold
Formule :C12H10OSDegré de pureté :Min. 95%Masse moléculaire :202.27 g/molRef: 3D-KBA29437
Produit arrêté4-(1,3,4-Oxadiazol-2-yl)aniline
CAS :Versatile small molecule scaffold
Formule :C8H7N3ODegré de pureté :Min. 95%Masse moléculaire :161.16 g/mol2-Methoxy-3-methylbutane-1-sulfonyl chloride
CAS :Versatile small molecule scaffold
Formule :C6H13ClO3SDegré de pureté :Min. 95%Masse moléculaire :200.68 g/mol3-Bromo-2-chloro-6-fluorobenzyl alcohol
CAS :Versatile small molecule scaffold
Formule :C7H5BrClFODegré de pureté :Min. 95%Masse moléculaire :239.47 g/mol2-(4-Hydroxy-4-methylcyclohexyl)propanoic acid
CAS :Versatile small molecule scaffold
Formule :C10H18O3Degré de pureté :Min. 95%Masse moléculaire :186.25 g/mol5-(1,3-Dioxolan-2-yl)furan-2-carbonitrile
CAS :Versatile small molecule scaffold
Formule :C8H7NO3Degré de pureté :Min. 95%Masse moléculaire :165.15 g/mol4-(Hydroxymethyl)-1-methylpyrrolidin-2-one
CAS :Versatile small molecule scaffold
Formule :C6H11NO2Degré de pureté :Min. 95%Masse moléculaire :129.16 g/mol5-(Benzyloxy)pyridine-2-carbaldehyde
CAS :Versatile small molecule scaffold
Formule :C13H11NO2Degré de pureté :Min. 95%Masse moléculaire :213.23 g/mol1-Bromo-4-cyclopentylbenzene
CAS :1-Bromo-4-cyclopentylbenzene (1-BCPB) is a chlorinated aromatic compound that can be synthesized by reacting 1-bromo-4-chlorobenzene and cyclopentylmagnesium bromide. The reaction sequence begins with the addition of hydrochloric acid to the first reactant, followed by magnesium chloride and ether. The mixture is heated to produce a liquid solution of ethylhexyloxy pyridine, which reacts with the second reactant in a sequence that leads to the desired product. 1-BCPB is used as an intermediate in organic synthesis. It has been shown to have moderate interaction with paraldehyde and pyridinium salts at room temperature, but it does not react with cycloalkyls or pyridinium salts at elevated temperatures.
Formule :C11H13BrDegré de pureté :Min. 95%Masse moléculaire :225.13 g/molRef: 3D-JCA73491
Produit arrêté3-(carboxymethyl)-1-methyl-1H-indole-2-carboxylic acid
CAS :Versatile small molecule scaffold
Formule :C12H11NO4Degré de pureté :Min. 95%Masse moléculaire :233.22 g/mol5,5,6,6,6-Pentafluorohexan-1-ol
CAS :Versatile small molecule scaffold
Formule :C6H9F5ODegré de pureté :Min. 95%Masse moléculaire :192.13 g/mol4-Bromo-7-fluoroisoquinolin-1-ol
CAS :Versatile small molecule scaffold
Formule :C9H5BrFNODegré de pureté :Min. 95%Masse moléculaire :242.04 g/mol7-Bromo-3H-imidazo[4,5-b]pyridine
CAS :Versatile small molecule scaffold
Formule :C6H4BrN3Degré de pureté :Min. 95%Masse moléculaire :198.02 g/molRef: 3D-HYB17485
Produit arrêté(2,6-Dimethylpyridin-3-yl)methanol
CAS :Versatile small molecule scaffold
Formule :C8H11NODegré de pureté :Min. 95%Masse moléculaire :137.18 g/molRef: 3D-HYA30310
Produit arrêté(3S)-3-(tert-Butoxy)pyrrolidine, oxalic acid
CAS :Versatile small molecule scaffold
Formule :C10H19NO5Degré de pureté :Min. 95%Masse moléculaire :233.26 g/mol(7S,8aS)-7-Fluoro-octahydropyrrolo[1,2-a]pyrazine dihydrochloride
CAS :Versatile small molecule scaffold
Formule :C7H15Cl2FN2Degré de pureté :Min. 95%Masse moléculaire :217.11 g/molRef: 3D-HXC93968
Produit arrêté2-(3-Bromo-5-fluorophenyl)ethanol
CAS :Versatile small molecule scaffold
Formule :C8H8BrFODegré de pureté :Min. 95%Masse moléculaire :219.05 g/mol6-Methoxy-1,2-benzoxazol-3-amine
CAS :Versatile small molecule scaffold
Formule :C8H8N2O2Degré de pureté :Min. 95%Masse moléculaire :164.16 g/mol2-(2-Chlorophenyl)-1-phenylethan-1-one
CAS :Versatile small molecule scaffold
Formule :C14H11ClODegré de pureté :Min. 95%Masse moléculaire :230.69 g/mol(4-Methyl-1H-indol-2-yl)methanol
CAS :Versatile small molecule scaffold
Formule :C10H11NODegré de pureté :Min. 95%Masse moléculaire :161.2 g/mol1-Chloro-3-(4-chlorophenoxy)propan-2-one
CAS :Versatile small molecule scaffoldFormule :C9H8Cl2O2Degré de pureté :Min. 95%Masse moléculaire :219.06 g/moltert-Butyl 4-cyano-4-methylpiperidine-1-carboxylate
CAS :Versatile small molecule scaffold
Formule :C12H20N2O2Degré de pureté :Min. 95%Masse moléculaire :224.3 g/mol(1R,3R)-3-Phenoxycyclobutan-1-ol
CAS :Versatile small molecule scaffold
Formule :C10H12O2Degré de pureté :Min. 95%Masse moléculaire :164.2 g/molRef: 3D-FDD47380
Produit arrêtéN,N-Dimethyl-2-(1-(1-(pyridin-2-yl)ethyl)-1H-inden-2-yl)ethan-1-amine hydrochloride
CAS :Please enquire for more information about N,N-Dimethyl-2-(1-(1-(pyridin-2-yl)ethyl)-1H-inden-2-yl)ethan-1-amine hydrochloride including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C20H24N2•(HCl)2Degré de pureté :Min. 95%Masse moléculaire :365.34 g/mol5-Hydroxy-1,3-diazinane-2-thione
CAS :Versatile small molecule scaffold
Formule :C4H8N2OSDegré de pureté :Min. 95%Masse moléculaire :132.19 g/mol2-Bromo-1,3,5-triisopropylbenzene
CAS :2-Bromo-1,3,5-triisopropylbenzene is an ethylene acetal that is prepared by the catalyzed reaction of aryl chlorides and anhydrous zinc bromide in the presence of triethylamine. The selectivities of this method are high because it can produce mainly a single isomer. The stereoselectivity is also high because the reaction proceeds with the formation of only one stereoisomer. The mechanism for this reaction involves a nucleophilic substitution of the halogenated aryl chloride with the trialkylborane, which generates two different products. This product has been used in the synthesis of biphenyls and nitro compounds.
Formule :C15H23BrDegré de pureté :Min. 95%Couleur et forme :Colorless Clear LiquidMasse moléculaire :283.25 g/mol1-(2-Methylphenyl)propan-2-amine
CAS :Produit contrôlé1-(2-Methylphenyl)propan-2-amine is a fatty acid ester that is used as an excipient in pharmaceutical dosage forms. It is used to increase the viscosity of drug solutions and suspensions, and to provide a protective coating for tablets. 1-(2-Methylphenyl)propan-2-amine is insoluble in water, but soluble in organic solvents such as alcohols and acetone. It can be prepared by reacting a primary amine with a fatty acid chloride or anhydride. The compound has been shown to have high affinity for 5HT2A receptors in vitro, which may account for its psychoactive effects.
Formule :C10H15NDegré de pureté :Min. 95%Masse moléculaire :149.23 g/mol1-(2,4,6-Trimethylphenyl)ethane-1,2-diol
CAS :Versatile small molecule scaffoldFormule :C11H16O2Degré de pureté :Min. 95%Masse moléculaire :180.24 g/molrac-(2R,3S)-1-{[(9H-Fluoren-9-yl)methoxy]carbonyl}-3-phenylpyrrolidine-2-carboxylic acid
CAS :Rac-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-3-phenylpyrrolidine-2-carboxylic acid is a chiral, stereospecific, cyclic sulfate that is synthetized by the reaction of glycol with lactam. It has been found to be effective against various types of cancer cells. Rac-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-3-phenylpyrrolidine 2 carboxylic acid is an enantiopure compound that can be used as an intermediate in the synthesis of antiinflammatory drugs such as kainic acid.
Formule :C26H23NO4Degré de pureté :Min. 95%Masse moléculaire :413.5 g/molRef: 3D-ENC98387
Produit arrêté2,4-Dimethyl-3,5-dinitrobenzoic acid
CAS :Versatile small molecule scaffold
Formule :C9H8N2O6Degré de pureté :Min. 95%Masse moléculaire :240.17 g/mol2-(1H-Pyrrol-1-yl)pyridine-3-carboxylic acid
CAS :Versatile small molecule scaffold
Formule :C10H8N2O2Degré de pureté :Min. 95%Masse moléculaire :188.18 g/mol4-[(4-Methoxyphenyl)methyl]azetidin-2-one
CAS :Versatile small molecule scaffoldFormule :C11H13NO2Degré de pureté :Min. 95%Masse moléculaire :191.23 g/mol1-(4-Methyl-2-pyridin-2-yl-1,3-thiazol-5-yl)ethanone
CAS :Versatile small molecule scaffold
Formule :C11H10N2OSDegré de pureté :Min. 95%Masse moléculaire :218.28 g/mol2,6-Dichloropyridine-3-sulfonamide
CAS :Versatile small molecule scaffold
Formule :C5H4Cl2N2O2SDegré de pureté :Min. 95%Masse moléculaire :227.07 g/mol7-Ethynylquinoline
CAS :Versatile small molecule scaffold
Formule :C11H7NDegré de pureté :Min. 95%Masse moléculaire :153.18 g/mol3-(2-Bromophenoxy)propan-1-ol
CAS :Versatile small molecule scaffold
Formule :C9H11BrO2Degré de pureté :Min. 95%Masse moléculaire :231.09 g/molRef: 3D-CCA44901
Produit arrêtéCyclopropyl(phenyl)methanethiol
CAS :Versatile small molecule scaffold
Formule :C10H12SDegré de pureté :Min. 95%Masse moléculaire :164.27 g/mol5-Bromo-1,3-dimethylpyridin-2(1H)-one
CAS :Benzyne is a reactive intermediate that is formed by the tautomerization of 5-bromo-1,3-dimethylpyridin-2(1H)-one. It is an adduct between a bromine atom and a benzene ring. This compound has been shown to react with electron-rich olefins to form bicyclic compounds called diels-alder adducts. These reactions are often catalyzed by metals, such as palladium or nickel. Benzyne also reacts with triple bonds or other electron rich centers to form benzyne adducts, which are highly reactive and can be used as chemical probes for electron density in molecules.
Formule :C7H8BrNODegré de pureté :Min. 95%Masse moléculaire :202.05 g/molrac-(1R,2R)-2-(Benzyloxy)cyclohexan-1-ol
CAS :Versatile small molecule scaffold
Formule :C13H18O2Degré de pureté :Min. 95%Masse moléculaire :206.28 g/mol5-(Iodomethyl)oxolan-2-one
CAS :Versatile small molecule scaffold
Formule :C5H7IO2Degré de pureté :Min. 95%Masse moléculaire :226.01 g/molRef: 3D-BAA72932
Produit arrêté1-(2-Methylpyridin-3-yl)ethanone
CAS :1-(2-Methylpyridin-3-yl)ethanone is a ketone that can be synthesized using the reaction of methyl sulfone, benzyl sulfone, and sulphone. It has been shown to have anti-inflammatory properties by inhibiting prostaglandin synthesis and has been used as a nonsteroidal anti-inflammatory drug (NSAID). 1-(2-Methylpyridin-3-yl)ethanone has also been shown to have analgesic effects in mice. This synthetic compound may be useful in treating inflammation, pain, and fever.
Formule :C8H9NODegré de pureté :Min. 95%Masse moléculaire :135.16 g/molRef: 3D-BAA72112
Produit arrêté3-(3-Bromopropyl)oxolane
CAS :Versatile small molecule scaffold
Formule :C7H13BrODegré de pureté :Min. 95%Masse moléculaire :193.08 g/mol1-(4-Methoxyoxan-4-yl)ethan-1-one
CAS :Versatile small molecule scaffold
Formule :C8H14O3Degré de pureté :Min. 95%Masse moléculaire :158.19 g/mol1-[3-(Hydroxymethyl)phenyl]ethan-1-one
CAS :Versatile small molecule scaffold
Formule :C9H10O2Degré de pureté :Min. 95%Masse moléculaire :150.17 g/mol3-(Piperazin-1-yl)aniline
CAS :Versatile small molecule scaffold
Formule :C10H15N3Degré de pureté :Min. 95%Masse moléculaire :177.25 g/molRef: 3D-AFA42203
Produit arrêté4-bromo-N-(2,2,2-trifluoroethyl)aniline
CAS :Versatile small molecule scaffold
Formule :C8H7BrF3NDegré de pureté :Min. 95%Masse moléculaire :254 g/molRef: 3D-ACA88529
Produit arrêtéN-(2-Methylpropyl)pyridin-3-amine
CAS :Versatile small molecule scaffold
Formule :C9H14N2Degré de pureté :Min. 95%Masse moléculaire :150.22 g/mol1-(3-Bromophenyl)-1H-imidazole
CAS :Versatile small molecule scaffold
Formule :C9H7BrN2Degré de pureté :Min. 95%Masse moléculaire :223.07 g/molRef: 3D-ABA37202
Produit arrêtéN-(3-Methylphenyl)-3-oxobutanamide
CAS :Versatile small molecule scaffold
Formule :C11H13NO2Degré de pureté :Min. 95%Masse moléculaire :191.23 g/mol3-(3,5-Dimethyl-1H-pyrazol-1-yl)-5-methyl-4H-1,2,4-triazol-4-amine hydrochloride
CAS :Versatile small molecule scaffold
Formule :C8H13ClN6Degré de pureté :Min. 95%Masse moléculaire :228.68 g/mol2,4-Dibromo-6-nitroaniline
CAS :2,4-Dibromo-6-nitroaniline is a nitro compound that has been used in the production of dyes. It is also used as a component in the synthesis of other organic compounds. 2,4-Dibromo-6-nitroaniline can be produced by electrolysis of an acid solution containing radical cations and benzene. The radical cations are formed by proton transfer from the acid to the benzene, followed by electron transfer from benzene to the electrode. This process results in the formation of nitro groups on the benzene ring, which undergoes oxidation to form 2,4-dibromo-6-nitroaniline. The cyclic voltammetry shows that this process occurs via two pathways: one with a fast rate and one with a slow rate. The mechanism for this reaction is not yet known.
Formule :C6H4Br2N2O2Degré de pureté :Min. 95%Masse moléculaire :295.92 g/mol2-Phenyl-1,3,4-oxadiazole
CAS :2-Phenyl-1,3,4-oxadiazole is a 2-phenyloxazole with an oxygen atom at the 1 position. It is a white crystalline solid that is soluble in water and has antibacterial properties. This chemical can be used as a catalyst for the synthesis of organic compounds. 2-Phenyl-1,3,4-oxadiazole reacts with nitro groups to form oxime derivatives and has been shown to inhibit the growth of fungi such as Candida albicans and Aspergillus niger. 2-Phenyl-1,3,4-oxadiazole can also be used as an antifungal agent against Trichophyton rubrum.
2-Phenyl-1,3,4-oxadiazole may be synthesized by reacting phenol with acetone in the presence of nitric acid or sulfuric acid. The structural formula for this compound isFormule :C8H6N2ODegré de pureté :Min. 95%Masse moléculaire :146.15 g/molRef: 3D-AAA82556
Produit arrêté4,5-Dihydro-1H-imidazol-2-amine hydrochloride
CAS :Please enquire for more information about 4,5-Dihydro-1H-imidazol-2-amine hydrochloride including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C3H7N3•HClDegré de pureté :Min. 95%Masse moléculaire :121.57 g/mol1-Hydroxycyclopentane-1-carbonitrile
CAS :1-Hydroxycyclopentane-1-carbonitrile is a monomer that is hydrolyzed to form benzoin and cyanohydrins. It can be used in the production of scifinder as a monomer or dimerizer.
Formule :C6H9NODegré de pureté :Min. 95%Masse moléculaire :111.14 g/mol4-Chloro-2-hydroxy-6-methylphenylboronic acid
CAS :Versatile small molecule scaffoldFormule :C7H8BClO3Degré de pureté :Min. 95%Masse moléculaire :186.4 g/molRef: 3D-HYB96150
Produit arrêté8-Bromo-2-methylimidazo[1,2-a]pyridine
CAS :Versatile small molecule scaffold
Formule :C8H7N2BrDegré de pureté :Min. 95%Masse moléculaire :211.05 g/mol3-Hydroxy-5-methylpyridine
CAS :3-Hydroxy-5-methylpyridine (3HMP) is a chemical substance that has been classified as an amine. It is a product of the metabolism of purines, which are nitrogenous bases found in DNA and RNA. 3HMP is produced by aerogenic bacteria (such as Enterobacter), and can be used to estimate the number of these bacteria present in water samples. 3HMP has been shown to have antiviral properties against influenza virus, and can be used as a biomarker for the presence of other viruses in animals. 3HMP also has mineralization properties, which have been studied extensively, particularly with regards to pancreatic disease.
Formule :C6H7NODegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :109.13 g/moltert-Butyl (2,2-difluoro-3-hydroxypropyl)carbamate
CAS :Versatile small molecule scaffoldFormule :C10H13NO4Degré de pureté :Min. 95%Masse moléculaire :211.21 g/molRef: 3D-PCC39821
Produit arrêté2-Bromo-3,3,3-trifluoro-1-propene
CAS :Produit contrôlé2-Bromo-3,3,3-trifluoro-1-propene is a chemical compound that has been synthesized in an asymmetric reaction. The reactant is bromopropane and the product is 2,2,2-trifluoropropene. The methylene group on the propene molecule is activated by the nucleophilic attack of a fluoride ion from hydrogen fluoride to form a cavity with a highly strained bond. The kinetic study of this reaction revealed that the activation energy for the reaction is 42 kJ/mol. Palladium-catalyzed coupling reactions are catalyzed by palladium and require nonpolar solvents such as toluene or dichloromethane. This type of reaction has been shown to be exothermic with an isolated yield of 1%.
Formule :C3H2BrF3Degré de pureté :Min. 95%Couleur et forme :Colorless PowderMasse moléculaire :174.95 g/molRef: 3D-FB11073
Produit arrêté4,5-Dihydroxy-2,3-Pentanedione
CAS :4,5-Dihydroxy-2,3-pentanedione is a carbonyl compound that is the product of the oxidation of ascorbic acid. It is used in wastewater treatment and has antimicrobial properties against infectious diseases. This compound has been shown to inhibit protein synthesis by binding to the ribosome and preventing the formation of peptide bonds between amino acids. 4,5-Dihydroxy-2,3-pentanedione has also been shown to bind to plasma proteins, which may be due to its acyl chain structure. 4,5-Dihydroxy-2,3-pentanedione can be synthesized in a catalytic mechanism that involves dehydroascorbic acid and molecular oxygen.
Formule :C5H8O4Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :132.11 g/molPiperyline
CAS :Piperyline is an alkanoic acid that has shown to be effective against skin cancer. It also has antimicrobial properties, which may be due to its ability to bind metal ions and form polymeric compounds. Piperyline inhibits microbial growth by inhibiting the synthesis of proteins and nucleic acids. The antimicrobial activity is related to its cationic polymerization with hydroxyl groups, which forms a structure that can inhibit microbial enzymes and disrupt microbial cell membranes. This compound also interacts with the skin's natural lipids, making it difficult for microorganisms to attach and grow on the skin. Piperyline is synthesized in organic chemistry laboratories as an amide precursor of other pharmaceuticals such as penicillin.
Formule :C16H17NO3Degré de pureté :Min. 95%Masse moléculaire :271.31 g/mol
