
Halogénures organiques
Sous-catégories appartenant à la catégorie "Halogénures organiques"
20442 produits trouvés pour "Halogénures organiques"
Berberine chloride hydrate
CAS :Berberine chloride hydrate is an isoquinoline alkaloid, which is a natural compound derived from various plants, such as Berberis species, with a robust pharmacological profile. Its mode of action is primarily through the modulation of multiple biochemical pathways. Berberine activates adenosine monophosphate-activated protein kinase (AMPK), a crucial regulator of energy homeostasis, and influences lipid and glucose metabolism. It exhibits significant antimicrobial activity, disrupting microbial cell walls and inhibiting the nucleic acid synthesis of pathogens.
Formule :C20H18ClNO4•(H2O)xDegré de pureté :Min. 95%Couleur et forme :Yellow PowderMasse moléculaire :371.81 g/mol5-Bromo-2-chlorobenzoyl chloride
CAS :5-Bromo-2-chlorobenzoyl chloride is a chemical compound that is used as an intermediate for the production of compounds. It can be produced by the reaction of benzene with thionyl chloride in the presence of phenetole. The chemical reaction proceeds with high yield and utilizes a high concentration of benzene, which is a pollutant. The reaction yields a mixture of 5-bromo-2-chlorobenzoyl chloride and 2,4,6-trichlorobenzoyl chloride and utilizes an organic solvent such as formic acid or acetic acid to form 5-bromo-2,4,6-trichlorobenzoic acid in situ. 5-Bromo-2,4,6-trichlorobenzoic acid is then reacted with ammonia to produce 2-(5'-bromo)benzothiazole. This chemical compound has been used as a reagent
Formule :C7H3BrCl2ODegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :253.91 g/mol4,5-Dibromo-1,2,6,7-tertahydro-8H-indeno[5,4-b]furan-8-one
CAS :4,5-Dibromo-1,2,6,7-tertahydro-8H-indeno[5,4-b]furan-8-one is a chemical reagent that is used for the debromination of ethyl cyanoacetate. The nucleophilic nature of the hydroxyl group in the target compound makes it an efficient substrate for this reaction. This reagent can be used to synthesize ramelteon which is a drug approved by the U.S. Food and Drug Administration (FDA) for insomnia treatment. This high yield synthesis highlights 4,5-dibromo-1,2,6,7-tertahydro-8H-indeno[5,4b]furan-8one's usefulness as a debrominating agent.
Formule :C11H8Br2O2Degré de pureté :Min. 95%Masse moléculaire :331.99 g/mol(Arg17)-Amyloid b-Protein (1-42) trifluoroacetate salt
CAS :Please enquire for more information about (Arg17)-Amyloid b-Protein (1-42) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C203H312N58O60SDegré de pureté :Min. 95%Masse moléculaire :4,557.07 g/molChlorotoxin trifluoroacetate salt
CAS :Chlorotoxin trifluoroacetate salt is a chlorotoxin derivative that has been modified to be more soluble in aqueous solutions. It is used to identify skin cancer and other forms of cancer, as well as for the study of cellular function and structure. The molecule can be injected into tissue or cells, where it binds to nuclei and causes cell death. Chlorotoxin trifluoroacetate salt has minimal toxicity in humans and can be used on histological specimens with little disruption to the tissue. This reagent may also be used to target intracellular targets such as glioma cells.
Formule :C158H249N53O47S11Degré de pureté :Min. 95%Masse moléculaire :3,995.72 g/moltert-Butyl6-[(1e)-2-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]ethenyl]-2,2-dimethyl-1,3-di oxane-4-acetate
CAS :Please enquire for more information about tert-Butyl6-[(1e)-2-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]ethenyl]-2,2-dimethyl-1,3-di oxane-4-acetate including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C29H40FN3O6SDegré de pureté :Min. 95%Masse moléculaire :577.71 g/molAmyloid beta-Protein (40-1) trifluoroacetate salt
CAS :Trifluoroacetate salt
Formule :C194H295N53O58SDegré de pureté :Min. 95%Masse moléculaire :4,329.81 g/mol1-Bromo-4-chlorobutane
CAS :1-Bromo-4-chlorobutane, also known as 4-bromo-1-chlorobutane, is a chemical compound with the molecular formula C6H5BrCl. It is a member of the group p2 of the periodic table and has been shown to be carcinogenic in animal studies. The compound is also used as an intermediate in the synthesis of other chemicals such as p-hydroxybenzoic acid. 1-Bromo-4-chlorobutane is used for treating infectious diseases such as malaria by interfering with purine metabolism. It can be administered orally or intravenously and has low bioavailability due to its rapid hydrolysis in the gastrointestinal tract.
Formule :C4H8BrClDegré de pureté :Min. 95%Masse moléculaire :171.46 g/mol1-(4,4'-Difluorobenzhydry)piperazine
CAS :1-(4,4'-Difluorobenzhydry)piperazine (1-DFBP) is a potential antitumor agent that has been shown to inhibit the growth of leukemia cells. It may be an inhibitor of apoptotic cell death, as it has been shown to induce hydrogen bond formation with coumarin derivatives. 1-DFBP has also been shown to have inhibitory activities against leukemia HL-60 cells, and is a competitive inhibitor of cinnarizine. The catalytic mechanism for 1-DFBP is not known, although kinetic data suggest that it involves hydrogen bonding and/or pi stacking interactions.
Formule :C17H18F2N2Degré de pureté :Min. 95%Masse moléculaire :288.34 g/molPentafluoropropionic acid
CAS :Pentafluoropropionic acid is a glycol ether that is used in the preparation of coumarin derivatives. It reacts with sodium carbonate and trifluoroacetic acid to form the corresponding acyl chloride, which then reacts with nitrogen atoms (e.g., ammonia) to form an amide or urea derivative. Pentafluoropropionic acid also reacts with hydrogen fluoride to form pentafluoropropane and hydrogen fluoride gas, which can be used as a propellant for aerosol sprays. Pentafluoropropionic acid binds to toll-like receptors on cancer cells and human serum, inhibiting their ability to synthesize DNA. The compound has been shown to inhibit tumor growth in mice by blocking the formation of cancer tissues.
Formule :C3HF5O2Degré de pureté :Min. 95%Couleur et forme :Clear LiquidMasse moléculaire :164.03 g/molFluorescein-6-carbonyl-Leu-Glu(OMe)-His-DL-Asp(OMe)-fluoromethylketone
CAS :Please enquire for more information about Fluorescein-6-carbonyl-Leu-Glu(OMe)-His-DL-Asp(OMe)-fluoromethylketone including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C45H47FN6O14Degré de pureté :Min. 95%Masse moléculaire :914.89 g/mol2-(4-Chlorobenzyl)pyridine
CAS :2-(4-Chlorobenzyl)pyridine is a synthetic pyridine compound that has been shown to have anti-cancer properties. It is also a potent inducer of the enzyme methane monooxygenase and has been shown to interact with other compounds, such as maleates and sulfoxides, which are also used in this type of experiment. The catalytic mechanism for 2-(4-chlorobenzyl)pyridine is not yet known, but it may involve an acidic chlorine atom or a hydrochloric acid catalyst. 2-(4-Chlorobenzyl)pyridine has been found to be effective at inhibiting the growth of cancer cells in vitro without toxic effects on healthy cells. It has also been shown to inhibit the proliferation of human leukemia cells in vivo.
Formule :C12H10ClNDegré de pureté :Min. 95%Masse moléculaire :203.67 g/mola-(Trichloromethyl)benzyl acetate
CAS :a-(Trichloromethyl)benzyl acetate is an organic compound with the formula CHClCOCH. It is a colorless liquid which is soluble in organic solvents. This compound exhibits oxidative carbonylation activity, and has been shown to be used for the coating of particles, detergent compositions, and analytical methods. The microcapsules are prepared by encapsulating a fatty acid in a glycol ether. The health effects of this compound are not well understood but it is believed that it may have some carcinogenic properties.
Formule :C10H9Cl3O2Degré de pureté :Min. 95%Masse moléculaire :267.54 g/molBradykinin-Like Neuropeptide (Aplysia californica) trifluoroacetate salt
CAS :Please enquire for more information about Bradykinin-Like Neuropeptide (Aplysia californica) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C53H98N24O14SDegré de pureté :Min. 95%Masse moléculaire :1,327.56 g/molDnp-Pro-Leu-Gly-Leu-Trp-Ala-D-Arg-NH2 trifluoroacetate salt
CAS :Please enquire for more information about Dnp-Pro-Leu-Gly-Leu-Trp-Ala-D-Arg-NH2 trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C45H64N14O11Degré de pureté :Min. 95%Masse moléculaire :977.08 g/molSerpinin (mouse, rat) trifluoroacetate salt
CAS :Please enquire for more information about Serpinin (mouse, rat) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormule :C123H202N32O46Degré de pureté :Min. 95%Masse moléculaire :2,865.11 g/molNeuropeptide Y (18-36) trifluoroacetate salt
CAS :Neuropeptide Y (18-36) trifluoroacetate salt H-Ala-Arg-Tyr-Tyr-Ser-Ala-Leu-Arg-His-Tyr-Ile-Asn-Leu-Ile-Thr-Arg -Gln is a peptide belonging to the family of neuropeptides. It has been shown to have potent vasoconstricting activity in rat and guinea pig hearts, as well as contractile activity in rat aortic rings. Neuropeptide Y (18 - 36) trifluoroacetate salt H -Ala -Arg Tyr Tyr Ser Ala Leu Arg His Tyr Ile Asn Leu Ile Thr Arg Gln Arg Tyr NH2 trifl uoroacetate salt also inhibits the cyclase activity of adenylate cyclase, which is responsible for generating the second messenger cAMP. This compound may be used to treat congestFormule :C112H174N36O27Degré de pureté :Min. 95%Masse moléculaire :2,456.81 g/molFluorescein-6-carbonyl-Ala-Glu(OMe)-Val-DL-Asp(OMe)-fluoromethylketone
CAS :Please enquire for more information about Fluorescein-6-carbonyl-Ala-Glu(OMe)-Val-DL-Asp(OMe)-fluoromethylketone including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C41H43FN4O14Degré de pureté :Min. 95%Masse moléculaire :834.8 g/mol(±)-DOI Hydrochloride
CAS :Produit contrôlé(±)-DoiHydrochloride is a serotonergic drug that belongs to the group of serotonin reuptake inhibitors. It affects the serotonergic system by inhibiting serotonin reuptake, which leads to increased synaptic concentrations of serotonin. This in turn activates signal pathways and increases levels of dopamine, norepinephrine, and epinephrine. (±)-DoiHydrochloride has antioxidative properties and can be used for the treatment of chronic schizophrenia. It was shown to be effective in patients with atrial fibrillation who were not responding well to other treatments.
Formule :C11H16INO2•HClDegré de pureté :Min. 95%Masse moléculaire :357.62 g/molRef: 3D-FD152269
Produit arrêté4-(Bromomethyl)phenylacetic acid
CAS :4-(Bromomethyl)phenylacetic acid is a potent cancer drug that blocks the activity of hydrogen-bonding interactions. It inhibits the growth of prostate cancer cells, DU145 cells, and other cell lines. The drug has been shown to inhibit the activation of toll-like receptor 4 (TLR4) in primary blood cells from healthy donors. TLR4 is a protein found on the surface of immune cells that senses molecules from bacteria, fungi, parasites, and viruses. This protein plays an important role in triggering anti-inflammatory and pro-inflammatory responses to infection. The drug also inhibits platelet aggregation and lipoprotein lipase activity in vitro.
Formule :C9H9BrO2Degré de pureté :Min. 95%Couleur et forme :SolidMasse moléculaire :229.07 g/molb-Alanine methyl ester hydrochloride
CAS :b-Alanine methyl ester hydrochloride is a fatty acid that is found in animal and plant tissues. It is a bifunctional molecule that can act as an inhibitor of serine proteases and also as an activator of fatty acid uptake by cells. This molecule has the potential to be used for the treatment of heart disease and other conditions caused by activation of serine proteases.
Formule :C4H9NO2·HClDegré de pureté :Min. 95%Couleur et forme :White PowderMasse moléculaire :139.58 g/molAmylin (human) trifluoroacetate salt
CAS :Amylin is a hormone that regulates the release of insulin from the pancreas. Amylin is a protein that consists of 39 amino acids, and in its natural form it is not soluble in water. The amyloid fibrils are insoluble aggregates of proteins that can be found in the brain tissue of patients with Alzheimer's disease. Amylin has been shown to have an entrapment efficiency greater than 96% by using polymeric particles with a diameter less than 50 microns. These particles are able to increase water solubility and nutrient metabolism, as well as improve evaporation rates. They also provide an increased surface area for absorption and pharmacological properties. Amylin has been shown to lower postprandial glycemia when used with insulin in type II diabetes mellitus patients, and may also be an anorectic agent.
Formule :C165H261N51O55S2Degré de pureté :Min. 95%Masse moléculaire :3,903.28 g/mol2,2-Difluoro-1,3-Benzodioxol-5-Ylboronic Acid
CAS :Please enquire for more information about 2,2-Difluoro-1,3-Benzodioxol-5-Ylboronic Acid including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormule :C7H5BF2O4Degré de pureté :Min. 95%Masse moléculaire :201.92 g/molH-Arg-Arg-Arg-Arg-OH trifluoroacetate salt
CAS :Trifluoroacetate salt
Formule :C24H50N16O5Degré de pureté :Min. 95%Masse moléculaire :642.76 g/molBiotinyl-Amylin (mouse, rat) trifluoroacetate salt
CAS :Please enquire for more information about Biotinyl-Amylin (mouse, rat) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormule :C177H286N54O55S3Degré de pureté :Min. 95%Masse moléculaire :4,146.69 g/mol(Des-Pyr 1,Des-Gly10,D-Leu6,Pro-NHEt 9)-LHRH trifluoroacetate salt
CAS :Please enquire for more information about (Des-Pyr 1,Des-Gly10,D-Leu6,Pro-NHEt 9)-LHRH trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C54H79N15O10Degré de pureté :Min. 95%Masse moléculaire :1,098.3 g/molBiotinyl-Atrial Natriuretic Factor (1-28) (human) trifluoroacetate salt
CAS :Please enquire for more information about Biotinyl-Atrial Natriuretic Factor (1-28) (human) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormule :C137H217N47O41S4Degré de pureté :Min. 95%Masse moléculaire :3,306.75 g/mol9-Fluorenone hydrazone
CAS :9-Fluorenone hydrazone is a compound that belongs to the group of chemical compounds known as heterocycles. It can be synthesized by reacting 9-fluorenone with hydrazine. The synthesis proceeds via an intramolecular hydrogen transfer reaction, which forms an unsymmetrical aldehyde. This aldehyde is oxidized to form the corresponding hydrazone through protonation and subsequent attack of a nitrogen nucleophile. Hydrazones are important for their antimicrobial properties and are used in the treatment of bacterial infections such as tuberculosis and leprosy. They are also used in the production of dyes and pharmaceuticals. The mechanism for this reaction involves the formation of an intermediate carbocation, followed by deprotonation to form the final product.
Formule :C13H10N2Degré de pureté :Min. 95%Couleur et forme :Yellow PowderMasse moléculaire :194.23 g/mol(D-Tyr6,betaPhe11,Phe13, Nle 14)-Bombesin (6-14) (free acid) trifluoroacetate salt
CAS :Please enquire for more information about (D-Tyr6,betaPhe11,Phe13, Nle 14)-Bombesin (6-14) (free acid) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C63H79N13O12Degré de pureté :Min. 95%Masse moléculaire :1,210.38 g/mol6-Bromoisoquinoline
CAS :6-Bromoisoquinoline is a tetradentate ligand that can be used as a molecular model to study the binding of metal ions and organic molecules. 6-Bromoisoquinoline has been shown to bind covalently and noncovalently with phosphate groups on the surface of Caco-2 cells and to induce surface-enhanced Raman spectroscopy. This ligand has a high nucleophilicity and reacts readily with chloride, which is an acidic functional group. The reaction products are hydrochloric acid, trifluoroacetic acid, or both. 6-Bromoisoquinoline can also act as an allosteric modulator in some enzymes, such as phosphofructokinase in glycolysis.
Formule :C9H6BrNDegré de pureté :Min. 95%Masse moléculaire :208.05 g/mol3,5-Diiodo-4-hydroxybenzhydrazide
CAS :3,5-Diiodo-4-hydroxybenzhydrazide is a chemical compound that is useful as a building block in organic synthesis. It is a versatile intermediate and can be used in the preparation of heterocyclic compounds and pharmaceuticals. 3,5-Diiodo-4-hydroxybenzhydrazide reacts with alkyl halides to form alkyl iodides, which are important reagents for organic synthesis. 3,5-Diiodo-4-hydroxybenzhydrazide has been used as an effective reagent for the formation of new carbon–carbon bonds and has been shown to be an excellent starting point for the synthesis of biologically active molecules.
Formule :C7H6I2N2O2Degré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :403.94 g/molPAR-2 (1-6) (mouse, rat) trifluoroacetate salt
CAS :Please enquire for more information about PAR-2 (1-6) (mouse, rat) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C29H55N9O8Degré de pureté :Min. 95%Masse moléculaire :657.8 g/mol(2E)-1-[5,6-Dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-2-buten-1-one
CAS :Please enquire for more information about (2E)-1-[5,6-Dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-2-buten-1-one including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C16H12F6N4ODegré de pureté :95%NmrMasse moléculaire :390.28 g/molRef: 3D-FD103313
Produit arrêtéS-(-)-Nicotine-delta1’-(5’)-iminium diperchlorate salt
CAS :Please enquire for more information about S-(-)-Nicotine-delta1’-(5’)-iminium diperchlorate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formule :C10H14Cl2N2O8Degré de pureté :Min. 95%Masse moléculaire :361.13 g/molRef: 3D-FN26207
Produit arrêtéAmmonium Undecafluorohexanoate
CAS :Undecafluorohexanoic acid is a perfluoroalkyl carboxylic acid that has been shown to disrupt steroidogenesis in vitro. It may be able to inhibit the transport of cholesterol, fats, and other lipids in cells, which causes disruption in steroidogenesis. This compound also has anti-cancer properties due to its ability to induce apoptosis and arrest cancer cell proliferation. Undecafluorohexanoic acid may also have developmental effects on animals because it can bind to estrogen receptors and disrupt the normal process of estrogen-mediated signaling pathways.
Formule :C6H4F11NO2Degré de pureté :Min. 95%Masse moléculaire :331.08 g/molTrityl chloride resin
CAS :Trityl chloride resin is a chemical compound that is used as a model system for the study of trifluoroacetic acid and its reactions. Trityl chloride resin is insoluble in water and has been used as a reaction solution for transfer reactions. It has been shown to be an effective ligand for many types of receptors, with binding constants ranging from 10 M-1 to 10 M-10. Trityl chloride resin can also be chiral, which means that it may exist in two forms that are mirror images of each other. The physiological effects of this compound are not well understood, but it has been shown to have an effect on coordination geometry.
Couleur et forme :Powder2,3,5-Trichlorobenzaldehyde
CAS :2,3,5-Trichlorobenzaldehyde is a chemical compound that has been shown to have anticancer and apoptotic effects. It inhibits the growth of bacteria by chelating iron ions and inhibiting bacterial dna synthesis. 2,3,5-Trichlorobenzaldehyde has also been shown to inhibit the growth of cancer cells in culture in an experimental study. This chemical has been used as a substrate for nmr spectroscopy to study its functional groups and radical scavenging activities. 2,3,5-Trichlorobenzaldehyde can be synthesized from phenacyl chloride and benzaldehyde in the presence of hydrogen chloride gas. The carbonyl group in 2,3,5-trichlorobenzaldehyde may cause metabolic disorders such as diabetes mellitus or hyperglycemia.
Formule :C7H3Cl3ODegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :209.46 g/molZinc 1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexadecafluoro-29H,31H-phthalocyanine
CAS :Please enquire for more information about Zinc 1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexadecafluoro-29H,31H-phthalocyanine including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormule :C32F16N8ZnDegré de pureté :Min. 95%Masse moléculaire :865.75 g/molRef: 3D-FZ101052
Produit arrêtéAngiotensin A (1-7) trifluoroacetate
CAS :Endogenous heptapetide which causes vasodilation and has anti-hypertensive properties.
Formule :C40H62N12O9•(C2HF3O2)xDegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :855 g/mol3-(2-Fluoroethoxy)Propanenitrile
CAS :3-(2-Fluoroethoxy)Propanenitrile is a chemical with toxic properties. It is classified as a fluoroacetic acid and has been used in the production of other chemicals. Fluoroacetic acid is toxic to humans, showing signs of skin irritation, respiratory tract irritation, and kidney damage. 3-(2-Fluoroethoxy)Propanenitrile is not found naturally and has been sponsored by many companies.
Formule :C5H8FNODegré de pureté :Min. 95%Masse moléculaire :117.12 g/molTriethyloxonium tetrafluoroborate
CAS :Triethyloxonium tetrafluoroborate is an antimicrobial agent that inhibits the transfer of electrons from one molecule to another. It has been shown to be effective against methicillin-resistant Staphylococcus aureus and Mycobacterium tuberculosis. Triethyloxonium tetrafluoroborate binds to the bacterial enzyme, Jak1, which is involved in the formation of cytokines and interleukins. This binding inhibits the production of these molecules, leading to cell death by apoptosis. The use of triethyloxonium tetrafluoroborate as a research tool has facilitated its discovery as a potential anti-inflammatory drug for autoimmune diseases such as type 1 diabetes mellitus and rheumatoid arthritis. Triethyloxonium tetrafluoroborate can be used to inhibit amide synthesis, which may have applications in the study of carbohydrate chemistry and nitrogen atoms in biological systems. This compound has also been used
Formule :C6H15BF4ODegré de pureté :Min. 95%Couleur et forme :PowderMasse moléculaire :189.99 g/mol2,3-Bis(bromomethyl)quinoxaline
CAS :2,3-Bis(bromomethyl)quinoxaline is a nitrogenous heterocyclic compound that has a coordination geometry of square planar. It has been used as an inhibitor for the protein p21 and the nucleophile in palladium complexes. 2,3-Bis(bromomethyl)quinoxaline is also a model system for studying reaction mechanisms and chemical structures. The electron density map of the compound was obtained by X-ray crystal structure analysis. The reaction mechanism of this molecule is proposed to be through a chelate ring cross-coupling process.
Formule :C10H8Br2N2Degré de pureté :Min. 95%Couleur et forme :Brown PowderMasse moléculaire :315.99 g/mol
