Methyl 5-[(4-chlorophenyl)sulfanyl]-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate CAS 449778-53-4
| CAS No. | 449778-53-4 |
| Molecular Formula | C18H13ClN2O3S |
| Molecular Weight | 372.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 5-[(4-chlorophenyl)sulfanyl]-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl 5-[(4-chlorophenyl)sulfanyl]-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate (CAS 449778-53-4) is a high-purity analytical reference standard with the molecular formula C18H13ClN2O3S and a molecular weight of 372.83 g/mol.
The molecular framework of Methyl 5-[(4-chlorophenyl)sulfanyl]-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate (C18H13ClN2O3S) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Methyl 5-[(4-chlorophenyl)sulfanyl]-4-formyl-1-phenyl-1H-pyrazole-3-carboxylate 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 | C18H13ClN2O3S |
| Molecular Weight | 372.83 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
Related Methyl Standards
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Recommended Standards
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