Cefixime Impurity 71 CAS CATO-C4X-113971
| CAS No. | CATO-C4X-113971 |
| Molecular Formula | C20H23N5O7S2 |
| Molecular Weight | 509.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H23N5O7S2, Cefixime Impurity 71 contains a flavonoid core, 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 509.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Cefixime Impurity 71 (CAS CATO-C4X-113971), a pharmacopoeial impurity reference standard (molecular formula C20H23N5O7S2, MW 509.56 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Cefixime Impurity 71 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 | C20H23N5O7S2 |
| Molecular Weight | 509.56 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity 24 (CAS 79368-92-6)
- Cefixime Impurity 31 (CAS CATO-C4X-113931)
- Cefixime Impurity 68 (CAS CATO-C4X-113968)
- Cefixime Impurity 112 (CAS CATO-C4X-1139112)
- Cefixime Impurity 75 (CAS CATO-C4X-113975)
- Cefixime Impurity 95 (CAS CATO-C4X-113995)
- Cefixime Impurity 69 (CAS CATO-C4X-113969)
- Cefixime Impurity 23 (CAS CATO-C4X-113923)
Recommended Standards
- 4-Nitrobenzyl 9,10-dipropoxyanthracene-2-sulfonate (CAS 144146-37-2)
- 2-Ethoxyethyl 7-(3,4-dimethoxyphenyl)-4-(2-fluorophenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate (CAS 332924-58-0)
- 2-Ethoxyethyl 7-(3,4-dimethoxyphenyl)-4-(4-fluorophenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate (CAS 332923-65-6)
- Zidovudine EP Impurity J (CAS 29706-84-1)
- Deucravacitinib Impurity 8 (CAS CATO-C4X-31388)
- Tryptophan EP Impurity B (Mixture of Diastereomers) (CAS 184955-21-3)
- Famotidine Impurity 52 (CAS CATO-C4X-139252)
- (Tyr1)-pTH (1-34) (human) trifluoroacetate salt (CAS 213779-10-3)
- 2-(Benzyloxy)-5-methylpyridin-3-ol (CAS 1881329-48-1)
- 1-(4-Phenoxyphenyl)thiourea (CAS 76839-21-9)
- (S)-2-morpholino-1-phenylethan-1-amine dihydrochloride (CAS 915009-79-9)
- Copper dichloro[2,2-(2-imidazolidinylidene)bis[pyridine]]- (CAS 89509-06-8)
- 5-Hydroxymethyl Tolterodine Glucuronide (CAS 210573-52-7)
- Cholecystokinin Octapeptide (sulfated) (H-2060.0005) (CAS 25679-23-6)
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