1-Methyl-3-nitro-1h-pyrazole-5-carbonyl chloride CAS 519165-02-7
| CAS No. | 519165-02-7 |
| Molecular Formula | C5H4ClN3O3 |
| Molecular Weight | 189.56 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 1-Methyl-3-nitro-1h-pyrazole-5-carbonyl chloride (CAS 519165-02-7), a certified reference material (molecular formula C5H4ClN3O3, MW 189.56 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H4ClN3O3, 1-Methyl-3-nitro-1h-pyrazole-5-carbonyl chloride contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 189.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures 1-Methyl-3-nitro-1h-pyrazole-5-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 | C5H4ClN3O3 |
| Molecular Weight | 189.56 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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 methanol, ethanol, DMSO, water |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 1006433-28-8 1-Methyl-4-nitro-1H-pyrazole-3-carbonyl chloride MFCD03421426 (CAS 1006433-28-8)
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Recommended Standards
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