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| Product | Description | |
|---|---|---|
| a-Ribavirin (impurity B) | a-Ribavirin (impurity B). Group: Biochemicals. Grades: Highly Purified. CAS No. 57198-02-4. Pack Sizes: 1mg, 2mg, 5mg, 10mg. Molecular Formula: C8H12N4O5. US Biological Life Sciences. |  Worldwide |
| 1-[2,3-O-Isopropylidene- β-D-ribofuranosyl]-1,2,4-triazole-3-carboxylic Acid Methyl Ester | Protected Ribavirin impurity. Group: Biochemicals. Alternative Names: 1-[2,3-O-(1-Methylethylidene)- β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxylic Acid Methyl Ester. Grades: Highly Purified. CAS No. 594860-43-2. Pack Sizes: 25mg. US Biological Life Sciences. | Worldwide |
| 1-[2,3-O-Isopropylidene-β-D-ribofuranosyl]-1,2,4-triazole-3-carboxylic Acid Methyl Ester | Protected Ribavirin impurity. Uses: Protected ribavirin impurity. Synonyms: 1-[2,3-O-(1-Methylethylidene)-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxylic Acid Methyl Ester. CAS No. 594860-43-2. Molecular formula: C12H17N3O6. Mole weight: 299.28. |  |
| 1,2,4-Triazole-3-carboxylic acid | An impurity of Ribavirin. Ribavirin is an anti-viral medication used to treat RSV infection, hepatitis C, and viral hemorrhagic fever. Synonyms: 1H-1,2,4-Triazole-3-carboxylic acid; s-Triazole-3-carboxylic acid; 4H-1,2,4-Triazole-3-carboxylic acid; NSC 165527; NSC 202574; Ribavirin EP Impurity C; Ribavirin Impurity C. Grade: ≥95%. CAS No. 4928-87-4. Molecular formula: C3H3N3O2. Mole weight: 113.07. | |
| 1-b-D-Ribofuranosyl-1,2,4-triazole-3-carboxylic acid methyl ester | 1-b-D-Ribofuranosyl-1,2,4-triazole-3-carboxamide methyl ester is an analogue nucleoside operative in antiviral medicaments. It can serve to obstruct the progression of viral ribonucleic acid synthesis, debilitating the replication capacity of particular viruses. Synonyms: Impurity H Ribavirin. CAS No. 38934-69-9. Molecular formula: C9H13N3O6. Mole weight: 259.22. | |
| 2',3'-Isopropylidene α-Ribavirin | Protected Ribavirin impurity B. Uses: Protected ribavirin impurity b. Synonyms: 1-(2',3'-Isopropylidene-α-D-ribofuranosyl)-1H-1,2,4-triazole-3-carboxamide. CAS No. 69313-80-0. Molecular formula: C11H16N4O5. Mole weight: 285.27. | |
| [(2R,3R,4R)-3-(Benzoyloxy)-4-fluoro-4-methyl-5-oxotetrahydrofuran-2-yl]methyl Benzoate | An impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Synonyms: benzoic acid [(2R,3R,4R)-3-benzoyloxy-4-fluoro-4-methyl-5-oxo-2-oxolanyl]methyl ester; D-erythro-Pentonic acid, 2-deoxy-2-fluoro-2-methyl-, γ-lactone, 3,5-dibenzoate, (2R)-; (2R)-2-Deoxy-2-fluoro-2-methyl-D-erythro-pentonic acid γ-lactone 3,5-dibenzoate. Grade: ≥95%. CAS No. 874638-80-9. Molecular formula: C20H17FO6. Mole weight: 372.34. | |
| ((2R,3R,4R,5R)-3-(benzoyloxy)-4-chloro-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-methyltetrahydrofuran-2-yl)methyl benzoate | An impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Synonyms: ((2R,3R,4R,5R)-3-(benzoyloxy)-4-chloro-5-(2,4-dioxo-3,4-dihydropyrimidine-1(2H)-yl )-4-methyltetrahydrofuran-2-pyridin-3-yl)methyl benzoate. Grade: 98%. CAS No. 1496551-71-3. Molecular formula: C24H21ClN2O7. Mole weight: 484.89. | |
| (2R,3R,4R,5R)-5-(4-benzamido-2-oxopyrimidin-1(2H)-yl)-2-((benzoyloxy)methyl)-4-chloro-4-methyltetrahydrofuran-3-yl benzoate | An impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Synonyms: (2R,3R,4R,5R)-5-(4-benzoylamino-2-oxopyrimidine-1(2H)-yl)-2-((benzoyloxy)methyl)-4-Chloro-4-methyltetrahydrofuran-3-ylbenzoate. Grade: 95%. CAS No. 1496551-70-2. Molecular formula: C31H26ClN3O7. Mole weight: 588.01. | |
| (2R,3R,4R,5R)-5-(4-benzamido-2-oxopyrimidin-1(2H)-yl)-2-((benzoyloxy)methyl)-4-hydroxy-4-methyltetrahydrofuran-3-yl benzoate | An impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Grade: 95%. CAS No. 863329-64-0. Molecular formula: C31H27N3O8. Mole weight: 569.56. | |
| (2S)-Isopropyl 2-(((perfluorophenoxy)(phenoxy)phosphoryl)amino)propanoate | An impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Synonyms: Propan-2-yl (2S)-2-{[pentafluorophenoxy(phenoxy)phosphoryl]amino}propanoate; N-[(S)-(2,3,4,5,6-Pentafluorophenoxy)Phenoxyphosphinyl]-L-Alanine 1-Methylethyl Ester; N-[(S)-(2,3,4,5,6-Pentafluorophenoxy)phenoxyphosphinyl]-L-alanine1-methylethyl ester. CAS No. 1256490-52-4. Molecular formula: C18H17F5NO5P. Mole weight: 453.302. | |
| Sofosbuvir metabolite GS-566500-[13C,d3] | An isotope labelled impurity of Sofosbuvir. Sofosbuvir is a NS5B inhibtor used for the treatment of hepatitis C. It is only recommended with some combination of ribavirin, peginterferon-alfa, simeprevir, ledipasvir or daclatasvir. Synonyms: (2S)-2-(((((2R,3R,4R,5R)-5-(2,4-Dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2-yl)methoxy)(hydroxy)phosphoryl)amino)propanoic-13CD3 Acid; O-Desisopropyl O-Desphenyl Sofosbuvir-13C,D3; PSI 352707-13C,D3. Grade: > 95%. CAS No. 1256490-46-6. Molecular formula: [13C]C12H16FN3O9PD3. Mole weight: 415.29. | |
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