5-Chloro-3-ethyl-1-methyl-1H-pyrazole-4-carbonyl chloride CAS 128564-58-9
| CAS No. | 128564-58-9 |
| Molecular Formula | C7H8Cl2N2O |
| Molecular Weight | 207.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 5-Chloro-3-ethyl-1-methyl-1H-pyrazole-4-carbonyl chloride (CAS 128564-58-9), a certified reference material (molecular formula C7H8Cl2N2O, MW 207.06 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H8Cl2N2O, 5-Chloro-3-ethyl-1-methyl-1H-pyrazole-4-carbonyl chloride contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 207.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 5-Chloro-3-ethyl-1-methyl-1H-pyrazole-4-carbonyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H8Cl2N2O |
| Molecular Weight | 207.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 4-Chloro-3-ethyl-1-methyl-1H-pyrazole-5-carbonyl chloride (CAS 129560-00-5)
- 2-Chloro-1-(4-chloro-3,5-dimethyl-1H-pyrazol-1-yl)ethanone (CAS 514218-23-6)
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Recommended Standards
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