Cefotaxime EP Impurity G CAS 2489535-06-8
| CAS No. | 2489535-06-8 |
| Molecular Formula | C22H22N8O9S3 |
| Molecular Weight | 638.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cefotaxime EP Impurity G (C22H22N8O9S3) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 638.65 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Cefotaxime EP Impurity G (CAS 2489535-06-8), a pharmacopoeial impurity reference standard (molecular formula C22H22N8O9S3, MW 638.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cefotaxime EP Impurity G under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C22H22N8O9S3 |
| Molecular Weight | 638.65 g/mol |
| Purity | >90% |
| 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.) | 2000 |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefotaxime Standards
- Cefotaxime Impurity 38 (CAS CATO-C4X-120138)
- Cefotaxime Impurity 96 (CAS CATO-C4X-120196)
- Cefotaxime Impurity 70 (CAS CATO-C4X-120170)
- Cefotaxime Impurity 41 (CAS CATO-C4X-121241)
- Cefotaxime Impurity 63 (CAS CATO-C4X-120163)
- Cefotaxime Impurity 75 (CAS CATO-C4X-120175)
- Cefotaxime Impurity 35 (CAS CATO-C4X-120135)
- Cefotaxime Impurity 23 (CAS CATO-C4X-120123)
Recommended Standards
- [(R)-2′-(Diphenylphosphino)[1,1′-binaphthalen]-2-yl]diphenylphosphine oxide (CAS 152646-80-5)
- Evacetrapib (CAS 1186486-62-3)
- [2′-(Diphenylphosphino)[1,1′-binaphthalen]-2-yl]diphenylphosphine oxide (CAS 183244-55-5)
- Linezolid Impurity 113 (CAS CATO-C4X-1073113)
- Flurbiprofen Impurity 68 (CAS CATO-C4X-144468)
- Camptothecin Impurity 11 (CAS 2569708-76-3)
- Norfloxacin EP Impurity C DiHCl (CAS CATO-C4X-146842)
- 4-Iodophenoxyacetic acid (CAS 1878-94-0)
- 8-chloro-1,7-naphthyridine-3-carbonitrile (CAS 1600511-81-6)
- 1-((4-Bromo-2-fluorophenyl)sulfonyl)piperazine (CAS 1839318-16-9)
- 3-Amino-6-(trifluoromethyl)picolinamide (CAS 946594-91-8)
- 1-ethyl-3-methylcyclobutane-1-carbaldehyde (CAS 1707359-82-7)
- 2-(4-Amino-2-(difluoromethyl)-5-hydroxypyridin-3-yl)acetonitrile (CAS 1806837-52-4)
- [D-Phe22]Semaglutide (CAS CATO-C4X-2226222)
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