Nitrendipine Impurity 11 CAS 99-61-6
| CAS No. | 99-61-6 |
| Molecular Formula | C7H5NO3 |
| Molecular Weight | 151.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Nitrendipine Impurity 11 (C7H5NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Nitrendipine Impurity 11 (CAS 99-61-6, C7H5NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Nitrendipine Impurity 11 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 | C7H5NO3 |
| Molecular Weight | 151.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Nitrendipine Standards
- Nitrendipine Impurity 10 (CAS 40100-28-5)
- Nitrendipine Impurity 12 (CAS 22502-03-0)
- Nitrendipine Impurity 16 (CAS 40641-47-2)
- Nitrendipine Impurity 9 (CAS 104765-28-8)
- Nitrendipine Impurity 3 (CAS 111304-30-4)
- Nitrendipine Impurity 10 (CAS 15802-69-4)
- Nitrendipine Impurity 7 (CAS 67593-37-7)
- Nitrendipine Impurity 13 (CAS 104765-27-7)
Recommended Standards
- Nafamostat impurity 74 (CAS 619-68-1)
- 2-Nitrobenzaldehyde (CAS 552-89-6)
- Milrinone Impurity 36 (CAS 174966-09-7)
- p-Nitrobenzaldehyde (CAS 555-16-8)
- Selumetinib Impurity 17 (CAS CATO-C4X-305317)
- Itraconazole Impurity 85 (CAS CATO-C4X-149785)
- Suvorexant Impurity 46 (CAS CATO-C4X-181246)
- 1-(Tert-butoxycarbonyl)-3'H-spiro[azetidine-3,1'-isobenzofuran]-5'-carboxylic acid (CAS 2306272-31-9)
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- 3-Methoxy-piperidin-1-ylamine (CAS 887591-22-2)
- N-(4-bromo-2-methylphenyl)thiazolidine-4-carboxamide hydrochloride (CAS 1832251-10-1)
- 1-Acetyl-6-(trifluoromethoxy)indolin-2-one (CAS 2141958-75-8)
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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