Cefepime EP Impurity B CAS 2923899-40-3
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 2923899-40-3 |
| Molecular Formula | C25H29N9O7S3 |
| Molecular Weight | 663.75 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefepime EP Impurity B (CAS 2923899-40-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C25H29N9O7S3. Molecular weight: 663.75 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C25H29N9O7S3 |
| Molecular Weight | 663.75 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Nitrogen Atoms | 9 |
| Sulfur Atoms | 3 |
Related Cefepime Standards
- Cefepime Impurity 16 (CAS CATO-C4X-119316)
- Cefepime EP Impurity B (CAS CATO-C4X-11932)
- Cefepime Impurity 30 (CAS CATO-C4X-119330)
- Cefepime Impurity 32 (CAS CATO-C4X-119332)
- Cefepime Impurity 41 (CAS CATO-C4X-119341)
- Cefepime Impurity 25 (CAS CATO-C4X-119325)
- Cefepime Impurity 38 (CAS CATO-C4X-119338)
- Cefepime EP Impurity F (CAS CATO-C4X-11936)
Recommended Standards
- Benzyl ((S)-1-(((S)-1-(((S)-5-guanidino-1-((4-methyl-2-oxo-2H-chromen-7-yl)amino)-1-oxopentan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)carbamate (CAS 124485-41-2)
- N-(Boc-PEG2)-N-bis(PEG3-azide) (CAS 2353409-46-6)
- Fmoc-NH-PEG8-CH2CH2COOH (CAS 756526-02-0)
- Posaconazole Impurity 25 (CAS 1042398-26-4)
- Levocarnitine Impurity 15 (CAS 931426-07-2)
- 1-{5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl}-1H-pyrazol-4-amine (CAS 1521340-43-1)
- 1,3-Diphenyl-4,5-dihydro-1H-pyrazole-5-carbonitrile (CAS 3426-35-5)
- 2-Amino-2-methyl-N-(3-(methylsulfonyl)phenyl)propanamide hydrochloride (CAS 1829880-51-4)
- 4-Chloro-N-cyclopropyl-2-fluorobenzamide (CAS 1090552-62-7)
- Fibrinopeptide A, human TFA (CAS 61533-47-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com