Cefmetazole Impurity 3 CAS 70993-70-3
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 70993-70-3 |
| Molecular Formula | C13H13N3O5S2 |
| Molecular Weight | 355.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefmetazole Impurity 3 (CAS 70993-70-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C13H13N3O5S2. Molecular weight: 355.39 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C13H13N3O5S2 |
| Molecular Weight | 355.39 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Cefmetazole Standards
- Cefmetazole sodium Impurity 20 (CAS 70953-18-3)
- Cefmetazole Impurity 25 (CAS CATO-C4X-150725)
- Cefmetazole sodium Impurity 25 (CAS 73707-53-6)
- Cefmetazole sodium Impurity 12 (CAS 70953-19-4)
- Cefmetazole Impurity 21 (CAS CATO-C4X-150721)
- Cefmetazole Impurity 17 (CAS CATO-C4X-150717)
- Cefmetazole Impurity 57 (CAS CATO-C4X-150757)
- Cefmetazole Impurity 45 (CAS CATO-C4X-150745)
Recommended Standards
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Why CATO?
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