Amlodipine Besylate Impurity 47 CAS 1621516-91-3
| CAS No. | 1621516-91-3 |
| Molecular Formula | C18H20ClNO3 |
| Molecular Weight | 333.81 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Amlodipine Besylate Impurity 47 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.
Amlodipine Besylate Impurity 47 (CAS 1621516-91-3) is a certified pharmaceutical impurity reference standard with the molecular formula C18H20ClNO3 and a molecular weight of 333.81 g/mol.
Based on its molecular formula C18H20ClNO3, Amlodipine Besylate Impurity 47 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.81 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C18H20ClNO3 |
| Molecular Weight | 333.81 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Amlodipine Standards
- Amlodipine EP Impurity G (CAS 43067-01-2)
- Amlodipine impurity 126 (CAS CATO-C4X-1095126)
- Amlodipine Impurity 48 (CAS CATO-C4X-109548)
- Amlodipine Impurity 156 (CAS CATO-C4X-1095156)
- Amlodipine Impurity 27 (CAS 88150-75-8)
- Amlodipine Impurity N4 (CAS 113994-36-8)
- Amlodipine Impurity 77 (CAS 265136-65-0)
- Amlodipine Impurity N22 (CAS 39562-06-6)
Recommended Standards
- tert-Butyl 4-(4-chloro-1H-pyrrolo[2,3-b]pyridin-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (CAS 940948-28-7)
- Furametpyr (CAS 123572-88-3)
- N-[4-(benzyloxy)-3-methoxybenzyl]-2-chloro-N-methylacetamide (CAS 923752-67-4)
- 2-Chloro-N-(2-((6-(ethylamino)-2-methylpyrimidin-4-yl)amino)ethyl)benzamide (CAS 1203406-08-9)
- Lenalidomide Impurity 57 (CAS 90725-68-1)
- Meropenem Impurity 50 (CAS CATO-C4X-130950)
- Avatrombopag Impurity 137 (CAS CATO-C4X-2234137)
- 4-(Furan-2-carbonyl)-1-(furan-2-ylmethyl)-3-hydroxy-5-(3-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618072-48-3)
- Tert-butyl picolinate (CAS 79233-72-0)
- Budesonide Impurity 35 (CAS 3079028-41-1)
- 1-Cyclopropyl-N-(piperidin-3-yl)methanesulfonamide (CAS 1483299-29-1)
- (S)-1-(2-chloro-6-fluorophenyl)-2-methoxyethan-1-amine (CAS 1270028-55-1)
- 8-Chloro-2-(4-propylphenyl)quinoline-4-carbonyl chloride (CAS 1160256-06-3)
- Proinsulin C-Peptide (55-89) (human) (CAS 11097-48-6)
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