Ziprasidone EP Impurity A HCl CAS 87691-88-1
| CAS No. | 87691-88-1 |
| Molecular Formula | C11H13N3S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Ziprasidone EP Impurity A HCl (CAS 87691-88-1), a pharmacopoeial impurity reference standard (molecular formula C11H13N3SHCl, MW 255.76 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C11H13N3SHCl, Ziprasidone EP Impurity A HCl contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 255.76 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H13N3S HCl |
| Molecular Weight | 255.76 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ziprasidone Standards
- Ziprasidone-d8 (CAS 1126745-58-1)
- Ziprasidone EP Impurity E (CAS 1159977-04-4)
- Ziprasidone EP Impurity B (CAS 1159977-56-6)
- Ziprasidone EP Impurity C (CAS 1159977-64-6)
- Ziprasidone Related Compound F (CAS 1159977-64-6 (free base))
- Ziprasidone Impurity 9 (CAS 118289-55-7)
- Ziprasidone Impurity 10 (CAS 118305-72-9)
- Ziprasidone impurity 55 (CAS 118305-72-9 (free base))
Recommended Standards
- Cefmetazole Impurity 26 (CAS CATO-C4X-150726)
- Octreotide Impurity 16 (CAS CATO-C4X-152016)
- Piracetam EP Impurity D (CAS 53934-76-2)
- 3-Amino-2-(benzyloxy)-5-chlorophenyl benzoate (CAS 1221792-91-1)
- Betamethasone impurity 48 (CAS CATO-C4X-143748)
- 1-(Phenylsulfonyl)piperidin-4-amine hydrochloride (CAS 1174143-24-8)
- tert-Butyl 3-(2,2,2-Trifluoro-1-hydroxyethyl)piperidine-1-carboxylate (CAS 1283718-04-6)
- 5-Bromo-6-ethoxy-2-methylquinoline-4-carboxylic acid (CAS 89267-28-7)
- n-[4-(carbamimidoylmethoxy)phenyl]-2,2-dimethylpropanamide hydrochloride (CAS 1394707-66-4)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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