Felodipine Impurity 31 CAS CATO-C4X-109431
| CAS No. | CATO-C4X-109431 |
| Molecular Formula | C18H19Cl2NO4 |
| Molecular Weight | 384.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Felodipine Impurity 31 (CAS CATO-C4X-109431), a pharmacopoeial impurity reference standard (molecular formula C18H19Cl2NO4, MW 384.25 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C18H19Cl2NO4, Felodipine Impurity 31 contains a flavonoid 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 384.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C18H19Cl2NO4 |
| Molecular Weight | 384.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Felodipine Standards
- S-(-)-Felodipine (CAS 105618-03-9)
- R-(+)-Felodipine (CAS 119945-59-4)
- Felodipine Impurity 28 (CAS CATO-C4X-109428)
- Felodipine Impurity 29 (CAS CATO-C4X-109429)
- Felodipine Impurity 30 (CAS CATO-C4X-109430)
- Felodipine (CAS 72509-76-3)
- Felodipine EP Impurity A (CAS 96382-71-7)
- rac Felodipine-d3 (CAS 1189970-31-7)
Recommended Standards
- Amlodipine Impurity 52 (CAS CATO-C4X-109552)
- Amlodipine Impurity N5 (CAS 107812-86-2)
- 2-(2,4-Dichlorophenoxy)-N-(3,4-dimethoxyphenethyl)acetamide (CAS 133611-82-2)
- 8-(2,4-Dichlorobenzoyl)-3-propyl-1,3,8-triazaspiro[4.5]decane-2,4-dione (CAS 1021210-54-7)
- Propylthiouracil EP Impurity A (CAS 62-56-6)
- Thiamine Impurity 47 (CAS CATO-C4X-187347)
- Bupropion Impurity 58 (CAS CATO-C4X-120358)
- tert-Butyl 3-hydrazinylpiperidine-1-carboxylate hydrochloride (CAS 2089310-49-4)
- Indacaterol impurity 75 (CAS CATO-C4X-150075)
- Ethyl 2-(2-Formamidothiazol-4-yl)-2-oxoacetate (CAS 64987-03-7)
- Esomeprazole Impurity 21 (CAS CATO-C4X-111221)
- 4-Methoxy-1-phenylbutane-1,3-dione (CAS 32904-95-3)
- 2-Methyl-1,2-oxaphospholan-5-one 2-oxide (CAS 15171-48-9)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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