1-(4-Methoxyphenyl)-5-methyl-1H-pyrazole-4-carbonyl chloride CAS 306934-94-1
| CAS No. | 306934-94-1 |
| Molecular Formula | C12H11ClN2O2 |
| Molecular Weight | 250.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-(4-Methoxyphenyl)-5-methyl-1H-pyrazole-4-carbonyl chloride 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.
CATO supplies 1-(4-Methoxyphenyl)-5-methyl-1H-pyrazole-4-carbonyl chloride (CAS 306934-94-1), a certified reference material (molecular formula C12H11ClN2O2, MW 250.68 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1-(4-Methoxyphenyl)-5-methyl-1H-pyrazole-4-carbonyl chloride is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 250.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C12H11ClN2O2 |
| Molecular Weight | 250.68 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, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Methoxyphenyl Standards
- 1-(4-Methoxyphenyl)-3-methyl-1H-pyrazole-5-carbonyl chloride (CAS 1019007-97-6)
- 3-(4-(3-Methoxyphenyl)piperazin-1-yl)propan-1-ol (CAS 67514-08-3)
- N-[(4-Methoxyphenyl)methyl]-3-(methylsulfanyl)-1h-1,2,4-triazol-5-amine (CAS 1021266-90-9)
- (4-Methoxyphenyl)(2-(methylthio)-4,5-dihydro-1H-imidazol-1-yl)methanone (CAS 313684-13-8)
- 5-(((4-Methoxyphenyl)amino)methyl)-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 626230-21-5)
- N-(4-Methoxyphenyl)quinolin-2-amine (CAS 138386-76-2)
- 3-(4-Methoxyphenyl)-1-phenyl-1H-pyrazole (CAS 33064-21-0)
- 5-(4-Methoxyphenyl)-1-phenyl-1H-pyrazole (CAS 33064-24-3)
Recommended Standards
- 1-(4-Chlorophenyl)-5-methyl-1H-pyrazole-4-carbohydrazide (CAS 618092-42-5)
- 1-(5-Chloro-1-methyl-1H-pyrazol-4-yl)-3-phenylurea (CAS 648427-15-0)
- 1-(4-Chlorophenyl)-3-(furan-2-ylmethyl)urea (CAS 6298-28-8)
- 1-Benzyl-5-chloro-3-methyl-1h-pyrazole-4-carboxylic acid (CAS 882227-05-6)
- 3,5-Dichloro-2-(difluoromethyl)pyridine (CAS 1374659-46-7)
- 3-(1,3-dioxolan-2-yl)-1-methylpiperidine (CAS 99803-15-3)
- (R)-Methyl 3-mercapto-2-(2,2,2-trifluoroacetamido)propanoate (CAS 1577-62-4)
- Vitamin D3-[d3] (CAS 80666-48-4)
- 2-chloro-3-propoxypyrazine (CAS 1248609-64-4)
- 2-(Methylamino)ethane-1-sulfonamide hydrochloride (CAS 2094744-53-1)
- 252562-55-3 1-(4-Bromophenyl)-2-(3-fluorophenyl)ethan-1-one DTXSID70591612 (CAS 252562-55-3)
- Dimethyl 4-bromo-2-nitrophenylmalonate (CAS 100487-81-8)
- 4-Ethynyl-2-methyl-decahydro-quinolin-4-ol 59693-01-5 6408AE C12H19NO (CAS 59693-01-5)
- (D-His1)-Exenatide trifluoroacetate salt (CAS 1678417-09-8)
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