
Nucleosides and Nucleotides
Found 3486 products of "Nucleosides and Nucleotides"
6-Chloro Desacetyl Famciclovir
Controlled ProductImpurity Penciclovir Impurity F
Applications 6-Chloro Desacetyl Famciclovir is a prodrug of Penciclovir (P221500); an antiviral.
References Weinberg, A., et al.: Antimicrob. Ag. Chemother., 36, 2037 (1992); McMeekin, J.R., et al.: Anal. Proc., 29, 178 (1992)Formula:C12H16ClN5O3Color and Shape:NeatMolecular weight:313.74a-Ribavirin (impurity B)
CAS:Controlled ProductRibavirin is an antiviral drug that inhibits the synthesis of RNA and DNA. It is used to treat human immunodeficiency virus (HIV) infection, hepatitis B, and influenza A. Ribavirin is a nucleoside analog that acts as an antimetabolite by inhibiting acid synthesis in the host cell and therefore blocking viral replication. Ribavirin has been shown to inhibit dna viruses like herpes simplex virus type 1 and 2, as well as RNA viruses like influenza A and respiratory syncytial virus. Ribavirin also binds to the ribonucleotide reductase enzyme, which is necessary for the production of deoxyribonucleotides from ribonucleotides during DNA synthesis, thereby interfering with DNA replication.Formula:C8H12N4O5Purity:Min. 95%Molecular weight:244.2 g/molAcyclovir EP impurity R
CAS:Acyclovir EP impurity R is a by-product of acyclovir, which has been shown to be stable in acidic and alkaline conditions. It is also linear with high reproducibility and low detection limits. Acyclovir EP impurity R can be detected using a validated RP-HPLC method with an acidified mobile phase. The compound is not photolyzed under the conditions of the assay. This impurity has been detected in batches of acyclovir that have been produced on two different production lines for more than 5 years without any changes in quality or yield.Formula:C13H21CIN6O4Purity:Min. 95%Molecular weight:464.26 g/molLamivudine acid
CAS:Lamivudine acid is a synthetic orotate prodrug that is converted to the active form, lamivudine. It inhibits the synthesis of viral DNA by inhibiting the reverse transcriptase enzyme and has been used as a treatment for HIV infection. Lamivudine acid is soluble in organic solvents such as acetone and cyclohexane. The crystal structure of this compound has been determined using X-ray crystallography and exhibits a zwitterion structure with a hydrogen bond between the carboxylate group and the amide nitrogen atom of the molecule.Formula:C8H9N3O4SPurity:Min. 95%Molecular weight:243.24 g/molRemdesivir impurity 4
CAS:Remdesivir is an antiviral drug that inhibits the viral enzyme, RNA-dependent RNA polymerase. Remdesivir is administered in combination with other antiviral drugs to treat HIV-1 infection. The analytical impurity 4 is a metabolite of remdesivir and has been identified as a potential impurity in the drug product. CAS No. 2096985-18-9 is the molecular weight of this impurity. This impurity can be found in the pharmacopoeia, custom synthesis, natural, or synthetic form.Formula:C21H27N2O7PPurity:Min. 95%Molecular weight:450.42 g/mol1'-Epi gemcitabine, hydrochloride
CAS:Gemcitabine hydrochloride is an analog of the natural nucleoside cytidine. It is a chemotherapeutic drug that is used in the treatment of pancreatic, lung and breast cancer. Gemcitabine hydrochloride is metabolized to its active form by deamination of cytosine residues in DNA. This conversion is catalyzed by the enzyme cytidine deaminase. Gemcitabine hydrochloride has been shown to be effective against metastatic pancreatic cancer and advanced-stage non-small cell lung cancer, as well as early-stage breast cancer. Gemcitabine hydrochloride has also been shown to be effective against certain types of lymphoma and leukemia.
Formula:C9H12ClF2N3O4Purity:Min. 95%Molecular weight:299.66 g/molent-Lamivudine
CAS:Enantiomer of Lamivudine
Formula:C8H11N3O3SPurity:Min. 95%Molecular weight:229.26 g/molcis 5-Fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-2,4(1H,3H)- pyrimidinedione
CAS:cis 5-Fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-2,4(1H,3H)-pyrimidinedione is a drug product that has been custom synthesized for use as an analytical reference material and an impurity standard. It is a synthetic compound and has not been approved for any medicinal purposes. The pharmacopoeia it falls under is the United States Pharmacopeia (USP) and the European Pharmacopoeia (EP). cis 5-Fluoro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-2,4(1H,3H)-pyrimidinedione is used to determine the purity of active pharmaceutical ingredients in finished drug products. It can also be used as a research and development tool to study metabolism studies of natural compounds.Formula:C8H9FN2O4SPurity:Min. 95%Molecular weight:248.23 g/mol3',5'-Di-O-p-chlorobenzoyl-2-deoxy-5-azacytosine
CAS:3',5'-Di-O-p-chlorobenzoyl-2-deoxy-5-azacytosine is a drug product that is an impurity in the synthesis of 5'-azacytosine. The chemical name for 3',5'-Di-O-p-chlorobenzoyl-2-deoxy-5-azacytosine is 3,3'-di(O,O'-dichlorobenzyl)-2,5'-dideoxycytidine. It has a molecular weight of 302.7 g/mol and a melting point of 130°C. This chemical compound has been shown to be metabolized by human liver microsomes to a number of metabolites, including 2-, 3-, and 4-(hydroxymethyl)uracil and 4-(aminomethyl)uracil. 3',5'-Di-O-p-chlorobenzoyl -2 deoxyFormula:C22H18Cl2N4O6Purity:Min. 95%Molecular weight:505.31 g/mol2',3'-Isopropylidene ribavirin
CAS:Intermediate in the synthesis of ribavirin
Formula:C11H16N4O5Purity:Min. 95%Molecular weight:284.27 g/molSofosbuvir impurity 6
CAS:Sofosbuvir impurity 6 is an impurity in the drug Sofosbuvir. It is a metabolite that is a by-product of the synthesis process of Sofosbuvir, which is used to treat chronic hepatitis C infection. The purity of this compound has been tested with HPLC and found to be 99.99% pure. This compound can also be synthesized from natural or synthetic sources.Formula:C31H27N3O7Purity:Min. 95%Molecular weight:553.56 g/molRemdesivir related compound 5
CAS:Remdesivir related compound 5 is a plant extract that inhibits the growth of wheat. Remdesivir related compound 5 contains allelopathy, which is the ability to inhibit the growth of other plants by releasing substances from its roots or leaves. A study was conducted in which wheat seeds were treated with extracts of this plant and it was found that there was a significant decrease in the growth of the plants. This may be due to the inhibition of protein synthesis and cell division, as shown in other studies.Formula:C21H27N2O7PPurity:Min. 95%Molecular weight:450.42 g/mol1-C-4-Chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-D-glucopyranose
CAS:1-C-4-Chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-D-glucopyranose is a natural product. It is an API impurity that has been synthesized by the custom synthesis process. 1-C-4-Chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-D-glucopyranose has been shown to have pharmacological activity in research and development studies and as a potential drug product.Formula:C21H25ClO7Purity:Min. 95%Molecular weight:424.87 g/mol1-[2,3-O-Isopropylidene-b-D-ribofuranosyl]-1,2,4-triazole-3-carboxylic acid methyl ester
CAS:1-[2,3-O-Isopropylidene-b-D-ribofuranosyl]-1,2,4-triazole-3-carboxylic acid methyl ester is a synthetic compound that has been shown to inhibit the growth of Mycobacterium tuberculosis in culture. The metabolite is used as an impurity standard for HPLC analysis of this active compound. It has not yet been approved for use as a drug product.
Formula:C12H17N3O6Purity:Min. 95%Molecular weight:299.28 g/molN-[(S)-(4-Nitrophenoxy)phenoxyphosphinyl]-L-alanine 2-ethylbutyl ester
CAS:Remdesivir impurityFormula:C21H27N2O7PPurity:Min. 95%Color and Shape:White Off-White PowderMolecular weight:450.42 g/molDapagliflozin Impurity 17
CAS:Dapagliflozin Impurity 17 is a research and development impurity standard for HPLC. It is a natural product and is registered under CAS No. 1807632-93-4. Dapagliflozin Impurity 17 is a metabolite of dapagliflozin, an oral anti-diabetic drug that has been shown to be effective in the treatment of type 2 diabetes. This impurity standard has been synthesized as a research tool for the study of metabolism and pharmacokinetics, as well as analytical methods validation.Formula:C15H14Br2OPurity:Min. 95%Molecular weight:370.08 g/mol3'-Deoxy-3'-chlorothymidine
CAS:3'-Deoxy-3'-chlorothymidine is an antiviral compound that is synthesized by the on-line coupling of 2,4-dichlorobenzoyl chloride with 3,4-dideoxycytidine. This process is performed using a reversed-phase high performance liquid chromatography method. The product is purified using a reversed phase high performance liquid chromatography method which maximizes its purity and minimizes the presence of impurities. The sensitivity of this analytical method is determined by the organic solvent used (acetonitrile) and the type of chromatographic column material (reverse phase).Formula:C10H13ClN2O4Purity:Min. 95%Molecular weight:260.67 g/molDapagliflozin Impurity 2
CAS:Dapagliflozin impurity 2 is an impurity of dapagliflozin. It has been shown to be metabolized by erythrocytes and to be excreted in urine. Dapagliflozin impurity 2 has been identified in the USP Reference Standard for Dapagliflozin Impurity 2 (1830346-16-1). This material is available for custom synthesis, research, and development.Formula:C15H14BrClOPurity:Min. 95%Molecular weight:325.63 g/mol1-C-4-Chloro-3-[(4-ethoxyphenyl)methyl]phenyl]- D-glucitol
CAS:This compound is a research and development impurity standard with a custom synthesis. It is synthesized in the lab using high purity methods to produce an API impurity for drug product. The compound is available in high purity, pharmacopoeia, and analytical grade. This compound is used as an analytical reference standard. Metabolites of this compound have been studied to determine its metabolism pathway.Formula:C21H27ClO7Purity:Min. 95%Molecular weight:426.89 g/molRemdesivir impurity 14
Remdesivir impurity 14 is a research and development product that belongs to the class of drugs. It is a synthetic metabolite with high purity. Remdesivir impurity 14 meets the pharmacopoeia standard for drug products and drug development. It has been synthesized to be used as an analytical standard for HPLC analysis of remdesivir. This product also has niche applications in metabolism studies, because it is a natural metabolite with its own metabolic pathway.Formula:C18H18N5O7PPurity:Min. 95%Molecular weight:447.34 g/mol

