Cefdinir USP Impurity A CAS 178949-03-6
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 178949-03-6 |
| Molecular Formula | C7H8N4O4S |
| Molecular Weight | 244.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefdinir USP Impurity A (CAS 178949-03-6), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C7H8N4O4S. Molecular weight: 244.23 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C7H8N4O4S |
| Molecular Weight | 244.23 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Cefdinir Standards
- Cefdinir Impurity 53 (CAS 178422-40-7)
- Cefdinir CP Impurity C (CAS 79349-82-9)
- Cefdinir Impurity 37 (CAS CATO-C4X-121037)
- Cefdinir Impurity 74 (CAS CATO-C4X-121074)
- Cefdinir Impurity 38 (CAS 37155-50-3)
- Cefdinir Impurity 81 (CAS 137171-77-8)
- Cefdinir Impurity 52 (CAS 66338-96-3)
- Cefdinir CP Impurity A (CAS 1450758-21-0)
Recommended Standards
- Posaconazole Impurity 145 (CAS CATO-C4X-1208145)
- 7-Fluoro-3-methoxy-4-methyl-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1000576-22-6)
- Roflumilast Impurity 37 (CAS CATO-C4X-108437)
- Bisoprolol Impurity 109 (CAS 87844-84-6)
- Phytomenadione/Vitamin K1 Impurity 96 (CAS CATO-C4X-220796)
- (4-Iodophenyl)(3-methylpyridin-2-yl)methanone (CAS 1187171-16-9)
- N-Butyl-4-fluoro-N-(4-methyloxazol-2-yl)benzamide (CAS 57068-56-1)
- 7-Hydroxy-2H-benzo[b][1,4]thiazin-3(4H)-one (CAS 91375-75-6)
- 1-Chloro-7-naphthol (CAS 29921-50-4)
- (Leu31,Pro34)-Peptide YY (human) trifluoroacetate salt (CAS 179986-95-9)
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