Ethyl 4-(4-chlorophenyl)-5-formyl-2-methyl-6-(pyridin-2-ylsulfanyl)-1,4-dihydropyridine-3-carboxylate CAS 478261-90-4
| CAS No. | 478261-90-4 |
| Molecular Formula | C21H19ClN2O3S |
| Molecular Weight | 414.91 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 Ethyl 4-(4-chlorophenyl)-5-formyl-2-methyl-6-(pyridin-2-ylsulfanyl)-1,4-dihydropyridine-3-carboxylate.
Ethyl 4-(4-chlorophenyl)-5-formyl-2-methyl-6-(pyridin-2-ylsulfanyl)-1,4-dihydropyridine-3-carboxylate (CAS 478261-90-4) is a high-purity analytical reference standard with the molecular formula C21H19ClN2O3S and a molecular weight of 414.91 g/mol.
Based on its molecular formula C21H19ClN2O3S, Ethyl 4-(4-chlorophenyl)-5-formyl-2-methyl-6-(pyridin-2-ylsulfanyl)-1,4-dihydropyridine-3-carboxylate contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 414.91 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C21H19ClN2O3S |
| Molecular Weight | 414.91 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- Chloro(cinnamyl)triphenyl-l5-phosphane (CAS 69052-20-6)
- MS-417, >98% (HPLC) (CAS 916489-36-6)
- 4-(Benzylsulfanyl)-6-(4-chlorophenyl)-2-(pyridin-4-yl)pyrimidine-5-carbonitrile (CAS 320418-10-8)
- N-(5-Chloro-2-methoxyphenyl)-2-({4-cyano-1,6-diazatricyclo[6.2.2.0^{2,7}]dodeca-2,4,6-trien-5-yl}sulfanyl)acetamide (CAS 728886-14-4)
- 3-(Oxolan-2-ylformamido)propanoic acid (CAS 923176-92-5)
- (S)-6-Aminonicotine Hydrochloride (CAS 81990-64-9)
- N1,N1-Dipropylethane-1,2-diamine (CAS 14165-22-1)
- 8-Methyl-4-(2-phenylbutanoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326812-71-8)
- C27 Triaromatic sterane, 20R (CAS 80382-32-7)
- 1-Benzyl-6-oxo-N-phenyl-1,6-dihydropyridine-3-carboxamide (CAS 339008-77-4)
- 6-Chloronaphthalene-2-sulfonic acid (CAS 102878-14-8)
- 2-Bromoacetanilide (CAS 614-76-6)
- Rivastigmine Impurity N12 HCl (CAS 948051-93-2(free base))
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