5-[(3-Chlorophenyl)sulfanyl]-N-(4-fluorophenyl)-1,3-dimethyl-1H-pyrazole-4-carboxamide CAS 303998-08-5
| CAS No. | 303998-08-5 |
| Molecular Formula | C18H15ClFN3OS |
| Molecular Weight | 375.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-[(3-Chlorophenyl)sulfanyl]-N-(4-fluorophenyl)-1,3-dimethyl-1H-pyrazole-4-carboxamide (CAS 303998-08-5) is a high-purity analytical reference standard with the molecular formula C18H15ClFN3OS and a molecular weight of 375.85 g/mol.
5-[(3-Chlorophenyl)sulfanyl]-N-(4-fluorophenyl)-1,3-dimethyl-1H-pyrazole-4-carboxamide (C18H15ClFN3OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H15ClFN3OS |
| Molecular Weight | 375.85 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- 3-(4-Chlorophenyl)-5-(phenoxymethyl)-4-(p-tolyl)-4H-1,2,4-triazole (CAS 141078-93-5)
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Recommended Standards
- N-aryl benzimidazole (CAS 422554-26-5)
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- (E)-({6-chloro-2-phenylimidazo[1,2-a]pyridin-3-yl}methylidene)[(3-methylphenyl)methoxy]amine 478257-25-9 8P-664S (CAS 478257-25-9)
- 1-(4-Methylbenzyl)-1H-indole-2,3-dione 3-[N-(4-chlorophenyl)hydrazone] (CAS 303984-94-3)
- 112777-30-7 2-Chloro-N-(2-oxo-1,2-dihydropyridin-3-yl)acetamide DTXSID40552139 (CAS 112777-30-7)
- 4-Bromo-3-fluoro-2-methoxybenzonitrile (CAS 1427452-84-3)
- 2-(4-(Methylsulfonyl)phenyl)azetidine (CAS 777889-28-8)
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- (3-Fluoro-5-(4-methyl-1H-pyrazol-1-yl)phenyl)boronic acid (CAS 2225180-88-9)
- 5-Bromo-2-methoxy-3-(trifluoromethyl)benzoic acid (CAS 1445995-86-7)
- 5-Chloro-N-(1h-indazol-3-yl)furan-2-carboxamide (CAS 1258676-97-9)
- (Tyr?)-C-Peptide (dog) (CAS 101135-67-5)
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