4-Chloro-3,5-dimethyl-1H-pyrazole CAS 15953-73-8
| CAS No. | 15953-73-8 |
| Molecular Formula | C5H7ClN2 |
| Molecular Weight | 130.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Chloro-3,5-dimethyl-1H-pyrazole is closely related to a nitrile group, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Chloro-3,5-dimethyl-1H-pyrazole (CAS 15953-73-8) is a high-purity analytical reference standard with the molecular formula C5H7ClN2 and a molecular weight of 130.58 g/mol.
4-Chloro-3,5-dimethyl-1H-pyrazole (C5H7ClN2) contains a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Chloro-3,5-dimethyl-1H-pyrazole 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 | C5H7ClN2 |
| Molecular Weight | 130.58 g/mol |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-4,5-dimethyl-1h-imidazole (CAS 1049126-78-4)
- 4-Chloro-1-ethyl-1H-pyrazole (CAS 1171076-88-2)
- 5-Chloro-1,4-dimethyl-1H-pyrazole (CAS 127842-11-9)
- 5-Chloro-1-ethyl-1H-pyrazole (CAS 1427020-01-6)
- 4-Chloro-1,3-dimethyl-1H-pyrazole (CAS 15878-44-1)
- 4-Chloro-2,5-dimethyl-1H-imidazole (CAS 16265-08-0)
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- 2-Chloro-1-ethyl-1H-imidazole (CAS 946061-13-8)
Recommended Standards
- 2-(3-Chloroazetidin-3-yl)acetonitrile (CAS 1379377-27-1)
- 2-(Chloromethyl)-1-methyl-1H-imidazole (CAS 19225-92-4)
- 4-(2-Chloroethyl)-1H-imidazole (CAS 13518-55-3)
- 1-(2-Chloroethyl)-1H-imidazole (CAS 92952-84-6)
- 5-Bromo-3-methyl-1H-pyrrolo[3,2-b]pyridine (CAS 1935992-71-4)
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