Amlodipine Impurity 79 CAS 3516-73-2
| CAS No. | 3516-73-2 |
| Molecular Formula | C14H15ClO5 |
| Molecular Weight | 298.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Amlodipine Impurity 79 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.
CATO supplies Amlodipine Impurity 79 (CAS 3516-73-2), a pharmacopoeial impurity reference standard (molecular formula C14H15ClO5, MW 298.72 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C14H15ClO5, Amlodipine Impurity 79 contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 298.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C14H15ClO5 |
| Molecular Weight | 298.72 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Amlodipine Standards
- Amlodipine Impurity 134 (CAS CATO-C4X-1095134)
- Amlodipine Impurity N13 (CAS 70677-78-0)
- Amlodipine Impurity N2 (CAS 111429-90-4)
- Amlodipine impurity 124 (CAS CATO-C4X-1095124)
- Amlodipine Impurity 114 (CAS CATO-C4X-1095114)
- Amlodipine Impurity 77 (CAS 265136-65-0)
- Amlodipine Impurity 27 (CAS 88150-75-8)
- Amlodipine Impurity 156 (CAS CATO-C4X-1095156)
Recommended Standards
- Erlotinib Impurity 82 (CAS CATO-C4X-106982)
- Methotrexate Impurity 70 (CAS CATO-C4X-115470)
- Erlotinib Impurity 81 (CAS CATO-C4X-106981)
- Methotrexate Impurity 77 (CAS CATO-C4X-115477)
- Fluconazole Impurity 36 (CAS CATO-C4X-101936)
- Roflumilast Impurity 37 (CAS CATO-C4X-108437)
- Citalopram EP Impurity L (CAS CATO-C4X-110930)
- 3-Bromo-5-fluoro-4-hydroxybenzoic acid (CAS 1781774-76-2)
- Aripiprazole EP Impurity G (CAS 1797986-18-5)
- Dichlorobis[3-(di-t-butylphosphino)propylamine]ruthenium(II) (CAS 1196147-60-0)
- Sodium 2-oxocyclohexanecarboxylate (CAS 75265-85-9)
- 6-Bromo-5-methyl[1,2,4]triazolo[1,5-a]pyridine (CAS 746668-59-7)
- (E)-3-(4-methoxy-3-(trifluoromethyl)phenyl)acrylic acid (CAS 773131-67-2)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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