Methyl 5-chloro-1H-pyrazole-3-carboxylate CAS 1810069-85-2
| CAS No. | 1810069-85-2 |
| Molecular Formula | C5H5ClN2O2 |
| Molecular Weight | 160.56 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.
Methyl 5-chloro-1H-pyrazole-3-carboxylate (CAS 1810069-85-2), molecular formula C5H5ClN2O2 and molecular weight 160.56 g/mol, is a CATO reference standard with documented purity and traceability.
Methyl 5-chloro-1H-pyrazole-3-carboxylate (C5H5ClN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Methyl 5-chloro-1H-pyrazole-3-carboxylate 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 | C5H5ClN2O2 |
| Molecular Weight | 160.56 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 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 4-Chloro-1h-pyrazole-3-carbohydrazide (CAS 1005584-54-2)
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- Methyl 5-chloro-1H-imidazole-4-carboxylate (CAS 1192372-11-4)
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