Olanzapine EP Impurity A CAS 138564-59-7
| CAS No. | 138564-59-7 |
| Molecular Formula | C12H9N3O2S |
| Molecular Weight | 259.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C12H9N3O2S, Olanzapine EP Impurity A 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 259.28 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 Olanzapine EP Impurity A (CAS 138564-59-7), a pharmacopoeial impurity reference standard (molecular formula C12H9N3O2S, MW 259.28 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.
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.
Physical & Chemical Properties
| Molecular Formula | C12H9N3O2S |
| Molecular Weight | 259.28 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Olanzapine Standards
- Olanzapine Impurity 26 (CAS CATO-C4X-117826)
- Olanzapine Impurity 27 (CAS CATO-C4X-117827)
- Olanzapine Impurity 65 (CAS CATO-C4X-117865)
- Olanzapine Impurity 14 (CAS 2217-65-4)
- Olanzapine Impurity 32 (CAS CATO-C4X-117832)
- Olanzapine Impurity 64 (CAS CATO-C4X-117864)
- Olanzapine Impurity 17 (CAS CATO-C4X-117817)
- Olanzapine Impurity 47 (CAS 612507-13-8)
Recommended Standards
- Amisulpride EP Impurity E (CAS 71675-87-1)
- Amisulpride Impurity 39 (CAS CATO-C4X-104539)
- Amisulpride Impurity 29 (CAS 148516-69-2)
- N-Nitroso Olanzapine EP Impurity B (CAS CATO-C4X-117851)
- Trazodone Impurity 83 (CAS CATO-C4X-177283)
- Linezolid Impurity 46 (CAS CATO-C4X-107346)
- Evocalcet Impurity 32 (CAS CATO-C4X-248532)
- Favipiravir Impurity 24 (CAS CATO-C4X-210224)
- (6-(Trifluoromethyl)Piperidin-2-Yl)Methanol (CAS 1784370-07-5)
- Melamine In Milk (CAS CATO-CCRM104007)
- (S)-3-Amino-5-(methylthio)pentanoic Acid (CAS 1217975-36-4)
- 1-Benzyl-1H-indole-3-carbonitrile (CAS 118959-33-4)
- 3-Butylcyclohexan-1-ol (CAS 120708-21-6)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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