Cefotaxime Impurity 99 CAS CATO-C4X-120199
| CAS No. | CATO-C4X-120199 |
| Molecular Formula | C32H32N10O13S4 |
| Molecular Weight | 892.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Cefotaxime Impurity 99 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Cefotaxime Impurity 99 (CAS CATO-C4X-120199), a pharmacopoeial impurity reference standard (molecular formula C32H32N10O13S4, MW 892.92 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C32H32N10O13S4, Cefotaxime Impurity 99 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 892.92 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C32H32N10O13S4 |
| Molecular Weight | 892.92 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
| Sulfur Atoms | 4 |
Related Cefotaxime Standards
- Cefotaxime Impurity 101 (CAS CATO-C4X-1201101)
- Cefotaxime Impurity 102 (CAS CATO-C4X-1201102)
- Cefotaxime Impurity 34 (CAS CATO-C4X-120134)
- Cefotaxime Impurity 32 (CAS CATO-C4X-120132)
- Cefotaxime Impurity 40 (CAS CATO-C4X-120140)
- Cefotaxime Impurity 82 (CAS CATO-C4X-120182)
- Cefotaxime EP Impurity F (CAS 175032-97-0)
- Cefotaxime Impurity 88 (CAS CATO-C4X-120188)
Recommended Standards
- Candesartan Cilexetil Impurity 41 (CAS CATO-C4X-123441)
- Mca-Pro-Leu-Gly-Pro-D-Lys(Dnp)-OH (CAS 185698-23-1)
- 4',4''',4''''',4'''''''-(1,4-Phenylenebis(azanetriyl))tetrakis(([1,1'-biphenyl]-4-carboxylicacid)) (CAS 2151058-66-9)
- Fluorescein-6-carbonyl-Asp(OMe)-Glu(OMe)-Val-DL-Asp(OMe)-fluoromethylketone (CAS 1926163-65-6)
- Trospium Impurity 6 (CAS CATO-C4X-20386)
- Rosuvastatin Impurity 200 (CAS CATO-C4X-1169200)
- Dexpanthenol Impurity 30 (CAS CATO-C4X-161332)
- 3-Methoxycarbonyl-2,2,5,5-tetramethyl-3-pyrrolidin-1-oxyl (CAS 2154-32-7)
- 3-Methyl-1-[4-(2-thienyl)-1,3-thiazol-2-yl]-1h-pyrazol-5-amine (CAS 1170887-99-6)
- 1-Methyl-3-(4-methyl-2-nitrophenyl)-2-thioxoimidazolidin-4-one (CAS 1403323-05-6)
- (R)-(+)-Tetrahydrofuran-2-carboxylic Acid (CAS 87392-05-0)
- 3-Heptylpyridine (CAS 103037-27-0)
- (R)-4-chloro-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-7-carboxylic acid (CAS 1777820-76-4)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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 18665070610 / Nicole.chen@cato-chem.com