Building Blocks
Subcategorías de "Building Blocks"
- Ácidos borónicos y derivados del ácido borónico(5.774 productos)
- Building Blocks quirales(1.237 productos)
- Building Blocks de hidrocarburos(6.098 productos)
- Building Blocks orgánicos(60.980 productos)
Se han encontrado 205158 productos de "Building Blocks"
ethyl 6-benzyl-2-oxa-6-azaspiro[3.4]octane-8-carboxylate
CAS:Versatile small molecule scaffold
Fórmula:C16H21NO3Pureza:Min. 95%Peso molecular:275.35 g/mol5-Bromo-2-iodopyridine
CAS:5-Bromo-2-iodopyridine is an antibiotic that is used to treat bacterial infections. It has been shown to inhibit the growth of bacteria by binding to the 50S ribosomal subunit. This drug also has a toxic effect on respiratory system cells, which may be due to its ability to induce apoptosis. 5-Bromo-2-iodopyridine interacts with DNA in a triazine ring and inhibits bacterial growth by inhibiting protein synthesis. The drug binds to the 50S ribosomal subunit at a site that is different from that of rifampin and other antibiotics. The reaction is catalyzed by palladium at high temperatures and takes place in organic solvents such as chloroform or benzene. This synthetic process can be made more efficient by using inexpensive starting materials, such as bromine, iodine, and acetone, rather than expensive starting materials like platinum or gold salts.
Fórmula:C5H3BrINPureza:Min. 95%Forma y color:Slightly Yellow PowderPeso molecular:283.89 g/mol2,2'-Dithiodianiline
CAS:2,2'-Dithiodianiline is a redox-active molecule with a redox potential of -0.08 V. It has been shown to inhibit the polymerase chain reaction by binding to DNA and inhibiting the enzyme DNA polymerase. 2,2'-Dithiodianiline is a potent inhibitor of bacterial growth in vitro, and has been shown to be cytotoxic in vivo. 2,2'-Dithiodianiline inhibits the growth of resistant mutants that are resistant to other antibiotics such as penicillin and ampicillin. This compound binds to molybdenum at an optimum concentration of 0.5 mM and coordinates through electrostatic interactions with the molybdenum atom. Structural analysis reveals that 2,2'-dithiodianiline forms hydrogen bonds with adenine residues in DNA and interacts with guanine residues in RNA through π-π stacking interactions. This interaction prevents transcription by blocking the binding
Fórmula:C12H12N2S2Pureza:Min. 98 Area-%Forma y color:PowderPeso molecular:248.37 g/molRef: 3D-FD16035
Producto descatalogado4-Bromopyridine hydrochloride
CAS:4-Bromopyridine HCl is a chemical compound with the molecular formula C6H5BrN. It is an aromatic heterocycle and is used in organic synthesis as a coupling partner in cross-coupling reactions. The bromine atom of 4-bromopyridine is replaced by chloride, resulting in 4-chloropyridine. The chlorination reaction can be conducted using either hydrochloric acid or thionyl chloride. This process can be done on an industrial scale and the chlorinated product has been used in the manufacture of pharmaceuticals, dyes, and pesticides. The reaction mechanism for this substitution reaction involves a nucleophilic attack by chlorine on the pyridine ring at carbon atom 2 followed by displacement of hydrogen from the adjacent position on nitrogen atom 3. Acylation reactions are oxidation processes that involve conversion of carboxylic acids to acyl halides or acyl chlorides through treatment with acidified halogenating agents such
Fórmula:C5H4BrN•HClPureza:Min. 95%Forma y color:White PowderPeso molecular:194.46 g/molIsocytosine
CAS:Isocytosine is a prodrug that has been synthesized with the intramolecular hydrogen on the nitrogen atoms, which makes it more chemically stable. Isocytosine is a reactive molecule, and can react with tautomers to form isocytosine derivatives. Isocytosine contains three hydrogen atoms that are transferable through reactions to other molecules. The chemical stability of isocytosine allows for its use in wastewater treatment. It also has metabolic effects, such as the inhibition of colorectal adenocarcinoma and metabolic disorders. Isocytosine can be used as a model system for studying transfer reactions and reaction mechanisms.
Fórmula:C4H5N3OPureza:Min. 95%Forma y color:PowderPeso molecular:111.1 g/molRef: 3D-FI07235
Producto descatalogado6,7-dihydro-5h-pyrrolo[3,4-d]pyrimidin-2-amine 2hcl
CAS:Versatile small molecule scaffold
Fórmula:C6H10Cl2N4Pureza:Min. 95%Peso molecular:209.07 g/molPotassium tert-butyl N-[3-(trifluoroboranuidyl)propyl]carbamate
CAS:Versatile small molecule scaffold
Fórmula:C8H16BF3KNO2Pureza:Min. 95%Peso molecular:265.13 g/mol6-Bromo-1-methylpyridin-2(1H)-one
CAS:Versatile small molecule scaffold
Fórmula:C6H6BrNOPureza:Min. 95%Peso molecular:188.02 g/mol4-Chloro-2-hydroxy-6-methylphenylboronic acid
CAS:Versatile small molecule scaffoldFórmula:C7H8BClO3Pureza:Min. 95%Peso molecular:186.4 g/mol7-bromo-3-iodoimidazo[1,2-a]pyridine
CAS:Versatile small molecule scaffold
Fórmula:C7H4BrIN2Pureza:Min. 95%Peso molecular:322.9 g/mol4-Bromo-4-methyltetrahydropyran
CAS:Versatile small molecule scaffold
Fórmula:C6H11BrOPureza:Min. 95%Peso molecular:179.06 g/molLeu-Leu-Leu-OH
CAS:Leu-Leu-Leu-OH is a pentapeptide that is used in cancer treatment to inhibit the growth of cancer cells. It prevents the production of proteins and, as a result, cell division. Leu-Leu-Leu-OH has been shown to be effective against tumor cells with an antibody that binds to the surface of cells. The monoclonal antibody is taken up by the cancer cells through receptor mediated endocytosis, which leads to inhibition of protein synthesis and cell death.
Fórmula:C18H35N3O4Pureza:Min. 95%Forma y color:White PowderPeso molecular:357.49 g/mol3,5-Dimethylbenzaldehyde
CAS:3,5-Dimethylbenzaldehyde is an organic compound that is a colorless liquid. It has a chemical formula of C9H12O2 and is classified as an aldehyde. 3,5-Dimethylbenzaldehyde can be synthesized by the reaction of isopropyl palmitate with xylene in the presence of carbon as a source. The reaction time required for this synthesis is approximately one day. The major products of this reaction are 3,5-dimethylbenzaldehyde and 2-methylbutanal. This reaction mechanism can also be used to determine the concentration of urinary metabolites in human urine samples. Analysis of these samples requires an organic solvent such as hexane or dichloromethane. Kinetic data was collected from the rate at which zinc powder reacts with 3,5-dimethylbenzaldehyde over time at different concentrations. A kinetic experiment was conducted using c–h bond activation to produce 3,5-dimethoxy
Fórmula:C9H10OPureza:Min. 95%Forma y color:Colorless Clear LiquidPeso molecular:134.18 g/mol5-Amino-2-bromo-3-fluoropyridine
CAS:Versatile small molecule scaffold
Fórmula:C5H4BrFN2Pureza:Min. 95%Peso molecular:191 g/molMethyl 3-bromo-1-methyl-1H-pyrazole-5-carboxylate
CAS:Versatile small molecule scaffold
Fórmula:C6H7BrN2O2Pureza:Min. 95%Peso molecular:219.04 g/molMethyl 5-Hexynoate
CAS:Methyl 5-hexynoate is a synthetic product that can be synthesized from soybean lipoxygenase and hydrogenation reduction. This product has been shown to be a useful synthon for the synthesis of monoclonal antibodies with high binding affinity. The synthetic pathway, which involves cross-coupling and asymmetric synthesis, is outlined in the diagram below. The following are the steps involved in the production of methyl 5-hexynoate: 1) Addition of ethyl bromide to terminal alkynes 2) Addition of hydrochloric acid 3) Reaction with potassium tert-butoxide 4) Hydrogenation reduction 5) Cross-coupling reaction 6) Asymmetric synthesis
Fórmula:C7H10O2Pureza:Min. 95%Peso molecular:126.15 g/mol2,5-Diethoxyterephthalohydrazide
CAS:2,5-Diethoxyterephthalohydrazide is an organic compound that has been used for the synthesis of linkers with various functional groups. It is a reactive intermediate in the synthesis of amines and compounds containing amine functional groups. 2,5-Diethoxyterephthalohydrazide has been shown to be stable under environmental conditions and can be used as a linker in organic solvents such as amines, alcohols or esters. This compound has also been shown to exhibit photocatalytic activity when irradiated by UV light. Techniques such as analytical chemistry and techniques can be used to characterize this compound's reactivity and stability.
Fórmula:C12H18N4O4Pureza:Min. 95%Peso molecular:282.3 g/molRef: 3D-LVB29271
Producto descatalogadoBis(3,5-bis(trifluoromethyl)phenyl)(2²,6²-bis(isopropoxy)-3,6-dimethoxybiphenyl-2-yl)phosphine
CAS:Versatile small molecule scaffold
Fórmula:C36H31F12O4PPureza:Min. 95%Peso molecular:786.58 g/mol2-Bromo-5-fluoro-4-nitroaniline
CAS:2-Bromo-5-fluoro-4-nitroaniline can be synthesized in a reaction system of ammonium chloride, hydrochloric acid, and water vapor. The reaction is carried out at a temperature of 190°C under reflux. The efficiency of this synthesis is high, and the chemical yield is about 90%.
Fórmula:C6H4BrFN2O2Pureza:Min. 95%Peso molecular:235.01 g/molMethyl 3-amino-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate
CAS:Versatile small molecule scaffold
Fórmula:C14H20BNO4Pureza:Min. 95%Peso molecular:277.13 g/mol3-Bromo-5-fluoro-2-iodotoluene
CAS:Versatile small molecule scaffold
Fórmula:C7H5BrFIPureza:Min. 95%Peso molecular:314.92 g/molMethyl trans-4-bromo-2-butenoate
CAS:Methyl trans-4-bromo-2-butenoate is a synthetic compound that contains a hydroxyl group and two bromine atoms. It is synthesized by the reaction of diethyl succinate, hydrogen, and piperazine in an aqueous solution. Methyl trans-4-bromo-2-butenoate has been shown to have antineoplastic activity in combination with epidermal growth factor (EGF) and carbohydrate conjugates. It also binds to cell surface receptors on the epidermal cells, inhibiting their growth. The structural formula of methyl trans-4-bromo-2-butenoate can be seen below: [[File:Methyltrans4bromobutanoate.png|thumb|300px|left|The structural formula of methyl trans-[4] -[bromo]-[2] -butenoate.]]
Fórmula:C5H7BrO2Pureza:Min. 95%Forma y color:Clear LiquidPeso molecular:179.01 g/molMethacryloxypropyl terminated polydimethylsiloxanes
CAS:MW 20,000 - 30,000
Fórmula:C20H40O6Si3Pureza:Min. 95%Peso molecular:460.8 g/moltert-Butyl (2,2-difluoro-3-hydroxypropyl)carbamate
CAS:Versatile small molecule scaffoldFórmula:C10H13NO4Pureza:Min. 95%Peso molecular:211.21 g/mol5-(3-Hydroxyphenyl)-1H-pyrazole-3-carboxylic acid
CAS:Versatile small molecule scaffold
Fórmula:C10H8N2O3Pureza:Min. 95%Peso molecular:204.18 g/molMethyl 3-bromopyrrole-2-carboxylate
CAS:Versatile small molecule scaffoldFórmula:C6H6BrNO2Pureza:Min. 95%Peso molecular:204.02 g/mol3-(iodomethyl)oxetane
CAS:Versatile small molecule scaffold
Fórmula:C4H7IOPureza:Min. 95%Peso molecular:198 g/mol2-(2-Azidoethoxy)acetic Acid
CAS:2-(2-Azidoethoxy)acetic Acid is a hydrophobic antibacterial agent that can be used to inhibit bacterial growth by disrupting the cell membrane. It has been shown to inhibit the growth of Staphylococcus aureus and Escherichia coli, which may be due to its ability to bind to the glutathione moiety in the bacterial cell membrane. 2-(2-Azidoethoxy)acetic Acid has been shown to have antimicrobial activity against both Gram-positive and Gram-negative bacteria in vitro. This compound is also able to cross the cell membrane, inhibiting bacterial replication in vivo.
Fórmula:C4H7N3O3Pureza:Min. 95%Peso molecular:145.12 g/mol2,4-Dichloropyrido [2,3-D] pyrimidine
CAS:2,4-Dichloropyrido [2,3-D] pyrimidine is a regioselective chlorination agent that can be used for the synthesis of various organic compounds. It is often used in cross-coupling reactions to form carbon-carbon bonds. 2,4-Dichloropyrido [2,3-D] pyrimidine has been shown to give high yields and is selective for disubstituted or monosubstituted substrates. This compound is also useful for the functionalization of C-H bonds via palladium-catalyzed coupling reactions.
Fórmula:C7H3Cl2N3Pureza:Min. 95%Forma y color:White PowderPeso molecular:200.02 g/molPhentolamine methanesulfonate
CAS:Phentolamine is a synthetic mesylate that is used as an antihypertensive agent, and for the treatment of Raynaud's syndrome and pheochromocytoma. Phentolamine is also used to prevent frostbite and to treat various types of shock. Phentolamine blocks alpha-2-adrenergic receptors, thereby decreasing sympathetic nerve impulses to the heart, blood vessels, kidneys, and other organs. This drug also acts as a histamine antagonist by blocking H1-receptors on vascular smooth muscle cells. Phentolamine has been shown to have no significant effects on 5-hydroxytryptamine (5HT) release in vitro or in vivo.
Fórmula:C18H23N3O4SPureza:Min. 95%Forma y color:White PowderPeso molecular:377.46 g/mol3,4,7,8-Tetramethyl-1,10-phenanthroline
CAS:Metal-chelating agent
Fórmula:C16H16N2Pureza:Min. 98 Area-%Forma y color:White PowderPeso molecular:236.31 g/molTripropylphosphine
CAS:Tripropylphosphine is a fatty acid that can be synthesized by reacting tripropyl alcohol with phosphorus trichloride. Tripropylphosphine is soluble in organic solvents, and has an optical rotation of +58°. It has been shown to have cancer-inhibiting properties, as well as the ability to inhibit tumor growth and induce apoptosis in cancer cells. This compound may also be used as a growth regulator, since it inhibits the synthesis of certain proteins and enzymes.
Fórmula:C9H21PPureza:Min. 95%Peso molecular:160.24 g/molH-Ala-Ala-Pro-OH trifluoroacetate
CAS:Please enquire for more information about H-Ala-Ala-Pro-OH trifluoroacetate including the price, delivery time and more detailed product information at the technical inquiry form on this page
Fórmula:C11H19N3O4•C2HF3O2Pureza:Min. 95%Peso molecular:371.31 g/molRef: 3D-FA183453
Producto descatalogado1-(4-Ethylphenyl)-2,2,2-trifluoroethan-1-ol
CAS:Versatile small molecule scaffold
Fórmula:C10H11F3OPureza:Min. 95%Peso molecular:204.19 g/mol1-Cyclobutylpiperidine-4-carboxylic acid
CAS:Versatile small molecule scaffold
Fórmula:C10H17NO2Pureza:Min. 95%Peso molecular:183.25 g/mol8-Chloro-3,7-dihydro-1H-purine-2,6-dione
CAS:8-Chloro-3,7-dihydro-1H-purine-2,6-dione is a reactive molecule that binds to the active site of bacterial cyclic nucleotide phosphodiesterases and inhibits their activity. This inhibition prevents the breakdown of cAMP and cGMP, which are important second messengers in eukaryotic cells. 8-Chloro-3,7-dihydro-1H-purine-2,6-dione is also a potent inhibitor of protein synthesis and has been used in research studies on wheat leaves.
Fórmula:C5H3N4O2ClPureza:Min. 95%Forma y color:PowderPeso molecular:186.56 g/molRef: 3D-FC09024
Producto descatalogado6-Methylbenzimidazole-5-carboxylic acid
CAS:Versatile small molecule scaffold
Fórmula:C9H8N2O2Pureza:Min. 95%Peso molecular:176.17 g/mol2-(4-Methoxy-1H-indol-3-yl)ethan-1-amine
CAS:Producto controlado2-(4-Methoxy-1H-indol-3-yl)ethan-1-amine is a synthetic compound that belongs to the class of organocatalysts. It is a serotonin receptor agonist, and has been shown to act as an antagonist at the 5HT2AR. This drug has been shown to have stereoselective effects in vitro, with high affinity for the S form of 5HT2AR. 2-(4-Methoxy-1H-indol-3-yl)ethan-1-amine also has some activity against dopamine receptors, but not as much as other compounds in its class. !--[if !supportLists]-->· !--[endif]-->This drug binds to speciogynine and alstovenine receptors, which are part of the opioid system.!--[if !supportLists]-->· !--[endif]-->Modelling studies suggest that 2-(4-M
Fórmula:C11H14N2OPureza:Min. 95%Forma y color:PowderPeso molecular:190.24 g/mol4,5-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.
Fórmula:C5H8O4Pureza:Min. 95%Forma y color:PowderPeso molecular:132.11 g/molRef: 3D-FD180770
Producto descatalogadoPoly(dioxanone)
CAS:Poly(dioxanone) is a biocompatible polymer that has been shown to promote bone growth in animal models. It is a cross-linking agent and can be used as an alternative to copper chromite, which is the most common cross-linking agent used in tissue engineering. Poly(dioxanone) has been shown to promote bone growth by stimulating the production of growth factors and increasing the activity of osteoblasts, cells that produce new bone. The material also promotes matrix deposition and remodeling, leading to increased bone density.
Fórmula:(C4H6O3)nPureza:Min. 95%Forma y color:Powder5-Chloro-3-methylpyridazine hydrochloride
CAS:Versatile small molecule scaffoldFórmula:C5H6Cl2N2Pureza:Min. 95%Peso molecular:165 g/moltert-Butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)picolinate
CAS:Versatile small molecule scaffoldFórmula:C16H24BNO4Pureza:Min. 95%Peso molecular:305.2 g/mol4-(Benzyloxy)thiophenol
CAS:Versatile small molecule scaffold
Fórmula:C13H12OSPureza:Min. 95%Peso molecular:216.3 g/mol2-[(tert-Butoxy)carbonyl]-2-azabicyclo[3.1.0]hexane-5-carboxylic acid
CAS:Versatile small molecule scaffold
Fórmula:C11H17NO4Pureza:Min. 95%Peso molecular:227.26 g/mol(R)-tert-Butyl 1-(3-aminopyridin-2-yl)pyrrolidin-3-ylcarbamate
CAS:Versatile small molecule scaffoldFórmula:C14H22N4O2Pureza:Min. 95%Peso molecular:278.35 g/molRef: 3D-IZB85984
Producto descatalogado1-(Pyrimidin-5-yl)propan-1-one
CAS:Versatile small molecule scaffold
Fórmula:C7H8N2OPureza:Min. 95%Peso molecular:136.15 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.
Fórmula:C16H17NO3Pureza:Min. 95%Peso molecular:271.31 g/mol1-(3-Amino-1H-pyrazol-1-yl)-2-methylpropan-2-ol
CAS:Versatile small molecule scaffold
Fórmula:C7H13N3OPureza:Min. 95%Peso molecular:155.2 g/molN-(2-Methyl-6-benzoxazolyl)-2-propenamide
CAS:Please enquire for more information about N-(2-Methyl-6-benzoxazolyl)-2-propenamide including the price, delivery time and more detailed product information at the technical inquiry form on this page
Fórmula:C11H10N2O2Pureza:Min. 95%Peso molecular:202.21 g/molRef: 3D-FM184094
Producto descatalogado±,±,±²,±²-Tetramethyl-1,3-benzenedipropionic acid
CAS:Versatile small molecule scaffold
Fórmula:C16H22O4Pureza:Min. 95%Peso molecular:278.34 g/mol5-Methyl-1-(piperidin-4-yl)-1H-pyrazole-4-carboxylic acid dihydrochloride
CAS:Versatile small molecule scaffoldFórmula:C10H17Cl2N3O2Pureza:Min. 95%Peso molecular:282.16 g/molFmoc-2,6-dichloro-L-phenylalanine
CAS:Please enquire for more information about Fmoc-2,6-dichloro-L-phenylalanine including the price, delivery time and more detailed product information at the technical inquiry form on this page
Fórmula:C24H19Cl2NO4Pureza:Min. 95%Peso molecular:456.32 g/molChloromethyl cyclohexyl ether
CAS:Chloromethyl cyclohexyl ether is a light-sensitive cross-linking agent that can be activated by light. It has two functional groups, a hydroxyl group and a chlorine atom. The skeleton of chloromethyl cyclohexyl ether is composed of an alicyclic hydrocarbon with six carbons and the molecule contains two divalent hydrocarbons, one of which is a trifluoromethyl group. Chloromethyl cyclohexyl ether has been used as a solid catalyst in the synthesis of amides and is also used in hyperproliferative diseases such as cancer.
Fórmula:C7H13ClOPureza:Min. 95%Peso molecular:148.63 g/molMethyl 4-chloro-5-hydroxy-3-pyridinecarboxylate
CAS:Versatile small molecule scaffold
Fórmula:C7H6ClNO3Pureza:Min. 95%Peso molecular:187.58 g/molMacaridine
CAS:Please enquire for more information about Macaridine including the price, delivery time and more detailed product information at the technical inquiry form on this page
Fórmula:C13H13NO2Pureza:Min. 95%Peso molecular:215.25 g/molRef: 3D-FM183770
Producto descatalogado2,5-Dimethoxytetrahydrofuran
CAS:2,5-Dimethoxytetrahydrofuran is an organic compound that can be synthesized from 2,5-dimethoxybenzaldehyde and tetrahydrofuran. The asymmetric synthesis of this compound was first reported in 1968. The nmr spectrum of 2,5-dimethoxytetrahydrofuran shows two signals at δ 5.89 and δ 7.03 ppm. This compound is soluble in water and organic solvents such as dichloromethane, benzene, toluene, chloroform, and methanol. 2,5-Dimethoxytetrahydrofuran has been shown to have pain-relieving effects using the formalin test in mice and rats. It also has antineoplastic properties when used with other quinoline derivatives.br>br> 2,5-Dimethoxytetrahydrofuran is a white solid
Fórmula:C6H12O3Pureza:Min. 95%Forma y color:PowderPeso molecular:132.16 g/molRef: 3D-FD00819
Producto descatalogadoNor reticuline
CAS:Norreticuline is a virus-induced gene that is primarily found in the opium poppy, Papaver somniferum. Norreticuline has been shown to be biosynthesized from reticuline by a series of enzymatic reactions. It is also involved in the metabolic pathway of papaverine, which is an alkaloid that has been used as a vasodilator and anti-hypertensive drug. The optimum pH for norreticuline production is between 6 and 7. Norreticuline has demonstrated anticancer activity against various tumor cells, such as breast cancer cells and colon cancer cells. Norreticuline may also have antiviral properties due to its ability to inhibit viral DNA replication and synthesis of viral proteins.
Fórmula:C18H21NO4Pureza:Min. 95%Peso molecular:315.36 g/mol4-Bromothiophene-2-acetic acid
CAS:Versatile small molecule scaffold
Fórmula:C6H5BrO2SPureza:Min. 95%Peso molecular:221.07 g/mol
