Nifedipine EP Impurity A CAS 67035-22-7
| CAS No. | 67035-22-7 |
| Molecular Formula | C17H16N2O6 |
| Molecular Weight | 344.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Nifedipine EP Impurity A (CAS 67035-22-7), a pharmacopoeial impurity reference standard (molecular formula C17H16N2O6, MW 344.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Nifedipine EP Impurity A (C17H16N2O6) contains a flavonoid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Nifedipine EP Impurity A 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 | C17H16N2O6 |
| Molecular Weight | 344.32 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 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 2 |
Related Nifedipine Standards
- Nifedipine impurity 38 (CAS CATO-C4X-141038)
- Nifedipine Metabolite (CAS 34783-31-8)
- Nifedipine Impurity 9 (CAS 21829-09-4)
- Nifedipine (CAS 21829-25-4)
- Nifedipine impurity 39 (CAS 128001-11-6)
- Nifedipine-d4 (2-nitrophenyl-d4) (CAS 1219798-99-8)
- Nifedipine-d6 (CAS 1188266-14-9)
- Nifedipine Impurity 8 (CAS 74936-71-3)
Recommended Standards
- 214843-13-7 Coccineone E (CAS 214843-13-7)
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- 2-Isopropyl-6,7-dihydro-5H-pyrrolo-[3,4-d]pyrimidin-4-ol hydrochloride (CAS 1220035-92-6)
- 2-Fluoro-4-(methoxymethoxy)benzaldehyde (CAS 2025821-71-8)
- 1-{7-bromopyrrolo[2,1-f][1,2,4]triazin-2-yl}ethan-1-amine (CAS 1367942-44-6)
- Evocalcet Impurity 37 (CAS CATO-C4X-248537)
- Dendroaspis Natriuretic Peptide (CAS 255721-52-9)
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