Cefoperazone Impurity 45 CAS 16681-77-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 16681-77-9 |
| Molecular Formula | C2H4N4 |
| Molecular Weight | 84.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefoperazone Impurity 45 (CAS 16681-77-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C2H4N4. Molecular weight: 84.08 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C2H4N4 |
| Molecular Weight | 84.08 g/mol |
| Purity | >95% |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 4 |
Related Cefoperazone Standards
- Cefoperazone EP Impurity B (Sodium salt) (CAS 127923-94-8)
- Cefoperazone EP Impurity E (HCl) (CAS 57399-61-8)
- Cefoperazone Sodium (CAS 62893-20-3)
- Cefoperazone Impurity 11 (CAS CATO-C4X-114911)
- Cefoperazone Impurity 50 (CAS CATO-C4X-114950)
- Cefoperazone Dihydrate (CAS 113826-44-1)
- Cefoperazone EP Impurity E (Sodium salt) (CAS 40994-22-7)
- Cefoperazone Impurity N10 (CAS 59032-27-8)
Recommended Standards
- 4-Amino-1,2,4-triazole (CAS 584-13-4)
- Metformin EP Impurity A (CAS 461-58-5)
- 1H-imidazol-1-ol (CAS 45376-79-2)
- Zonisamide impurity 8 (CAS CATO-C4X-17858)
- Probucol Impurity 5 (CAS CATO-C4X-29205)
- methyl (triphenylphosphoranylidene)acetate (CAS 21204-67-1)
- Methyl (R)-3-amino-3-(5-bromo-2-chlorophenyl)propanoate (CAS 1213126-45-4)
- 1-[4-(ethanesulfonyl)phenyl]ethan-1-amine (CAS 805951-56-8)
- (S)-1-(3,4-dimethoxyphenyl)-2-methoxyethan-1-amine (CAS 1270095-60-7)
- Protein Kinase C (alpha) Peptide (CAS 159939-84-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com