Topiroxostat impurity 71 CAS CATO-C4X-105571
| CAS No. | CATO-C4X-105571 |
| Molecular Formula | C7H6N4O |
| Molecular Weight | 162.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amide group, a hydroxyl group, an ether linkage, an aromatic ring system, Topiroxostat impurity 71 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 162.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 Topiroxostat impurity 71 (CAS CATO-C4X-105571), a pharmacopoeial impurity reference standard (molecular formula C7H6N4O, MW 162.15 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 | C7H6N4O |
| Molecular Weight | 162.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Topiroxostat Standards
- Topiroxostat Impurity 12 (CAS 94413-64-6)
- Topiroxostat Impurity 13 (CAS 135048-32-7)
- Topiroxostat Impurity 40 (CAS 1824131-48-7)
- Topiroxostat Impurity 41 (CAS CATO-C4X-105541)
- Topiroxostat Impurity 22 (CAS 160601-84-3)
- Topiroxostat Impurity 1 (CAS 3783-38-8)
- Topiroxostat Impurity 5 (CAS 6975-73-1)
- Topiroxostat Impurity 66 (CAS 159890-49-0)
Recommended Standards
- Axitinib Impurity 37 (CAS CATO-C4X-107137)
- Linezolid Impurity 14 (CAS 1445-69-8)
- Temozolomide Impurity 17 (CAS CATO-C4X-135317)
- Polaprezinc impurity 32 (CAS CATO-C4X-182132)
- Duloxetine Impurity (CAS 2680527-91-5)
- Voriconazole Impurity 79 (CAS CATO-C4X-136679)
- Vonoprazan Impurity 281 (CAS 3058423-29-0)
- 2-(Piperidin-4-yl)isoindolin-1-one hydrochloride (CAS 1233955-33-3)
- [4-(4-METHOXY-3-METHYLPHENYL)-1,3-THIAZOL-2-YL]METHANAMINE (CAS 643724-66-7)
- 1-[4-Amino-2-(methylthio)-5-thiazolyl]ethanone (CAS 39736-26-0)
- Ethyl 4,6-dichloropyrimidine-5-carboxylate (CAS 87600-72-4)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (4-(dimethylamino)furan-2-yl)boronate (CAS 2223043-47-6)
- (3,5-Dimethylphenoxy)acetyl chloride (CAS 78357-63-8)
- Insulin Degludec Impurity 15 (CAS CATO-C4X-215715)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com