Famotidine Impurity C21 CAS 7120-01-6
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 7120-01-6 |
| Molecular Formula | C5H8N4S |
| Molecular Weight | 156.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Famotidine Impurity C21 (CAS 7120-01-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H8N4S. Molecular weight: 156.21 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H8N4S |
| Molecular Weight | 156.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Famotidine Standards
- Famotidine impurity 66 (CAS 7259-54-3)
- Famotidine impurity 70 (CAS 874285-13-9)
- Famotidine Impurity 41 (CAS CATO-C4X-139241)
- Famotidine Impurity 57 (CAS 95853-46-6)
- Famotidine Impurity 81 (CAS CATO-C4X-139281)
- Famotidine Impurity 80 (CAS CATO-C4X-139280)
- Famotidine impurity 67 (CAS 77345-71-2)
- Famotidine Impurity C22 (CAS 86794-42-5)
Recommended Standards
- Dimethyl-1,3-thiazole-5-carboxamide (CAS 66806-33-5)
- N-(2-Methylthiazol-4-yl)acetamide (CAS 57372-19-7)
- 6-Methyl-2-(methylthio)pyrimidin-4-ol (CAS 20651-31-4)
- Benserazide Impurity 60 (CAS 13558-04-8(free base))
- Roxadustat Impurity 3 (CAS CATO-C4X-22133)
- 3-(3-Chloro-4-fluorobenzenesulfonyl)-6-methoxy-2H-chromen-2-one (CAS 866346-85-2)
- Relebactam Impurity 105 (CAS 2089462-48-4)
- 1-Chloro-5-methyl-4-nitro-2-(trifluoromethyl)benzene (CAS 873006-35-0)
- 1171976-97-8 4-(2-Thienyl)-5,6,8,9-tetrahydro-4H,7H-cyclopenta[4,5]thieno[3,2-f]pyrrolo[1,2-a][1,4]diazepine MFCD14282071 (CAS 1171976-97-8)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
Why CATO?
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