Nitrendipine Impurity 16 CAS 40641-47-2
| CAS No. | 40641-47-2 |
| Molecular Formula | C12H11NO5 |
| Molecular Weight | 249.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Nitrendipine Impurity 16 (CAS 40641-47-2), a pharmacopoeial impurity reference standard (molecular formula C12H11NO5, MW 249.22 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Nitrendipine Impurity 16 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 249.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C12H11NO5 |
| Molecular Weight | 249.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 1 |
Related Nitrendipine Standards
- 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)
- Nitrendipine Impurity 14 (CAS CATO-C4X-183414)
- Nitrendipine impurity 20 (CAS CATO-C4X-183420)
- Nitrendipine Impurity 15 (CAS CATO-C4X-183415)
Recommended Standards
- Nintedanib Impurity 31 (CAS 2514952-69-1)
- Asp(Obzl)-NCA (CAS 13590-42-6)
- Mizoribine Impurity 3 (CAS 91738-15-7)
- 3-Amino-2-{[2-(trifluoromethoxy)phenyl]methyl}propan-1-ol (CAS 1019110-74-7)
- Bosutinib Impurity N8 (CAS 42252-34-6)
- Oxacillin Impurity 33 (CAS 5053-35-0（free base）)
- Troxipide Impurity 23 (CAS 73448-95-0)
- 1-(7-Fluoro-1H-indol-3-yl)-N,N-dimethylmethanamine (CAS 53314-98-0)
- 2-Chloropyridine-4-methanol (CAS 100704-10-7)
- 7-Methoxybenzofuran-5-amine (CAS 937670-51-4)
- Isavuconazole impurity 67 (CAS CATO-C4X-1236167)
- tert-Butyl 3-azabicyclo[3.2.0]heptan-1-ylcarbamate (CAS 171906-65-3)
- 4-(Aminomethyl)-1-(4-fluorophenyl)pyrrolidin-2-one hydrochloride (CAS 1177329-69-9)
- Insulin Degludec Impurity 18 (CAS CATO-C4X-215718)
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