4-(3-Chlorophenyl)-5-(ethoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine-3-carboxylic acid CAS 148455-50-9
| CAS No. | 148455-50-9 |
| Molecular Formula | C17H18ClNO4 |
| Molecular Weight | 335.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(3-Chlorophenyl)-5-(ethoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine-3-carboxylic acid.
4-(3-Chlorophenyl)-5-(ethoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine-3-carboxylic acid (CAS 148455-50-9), molecular formula C17H18ClNO4 and molecular weight 335.78 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C17H18ClNO4, 4-(3-Chlorophenyl)-5-(ethoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine-3-carboxylic acid 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 335.78 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 4-(3-Chlorophenyl)-5-(ethoxycarbonyl)-2,6-dimethyl-1,4-dihydropyridine-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C17H18ClNO4 |
| Molecular Weight | 335.78 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 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 |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- (3-Chloro-2-(difluoromethyl)phenyl)(pyridin-4-yl)methanone (CAS 1261784-78-4)
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- Clindamycin Impurity 47 (CAS CATO-C4X-134147)
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