4-Bromo-5-chloro-1,3-dimethyl-1h-pyrazole CAS 29939-06-8
| CAS No. | 29939-06-8 |
| Molecular Formula | C5H6BrClN2 |
| Molecular Weight | 209.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-5-chloro-1,3-dimethyl-1h-pyrazole.
4-Bromo-5-chloro-1,3-dimethyl-1h-pyrazole (CAS 29939-06-8) is a high-purity analytical reference standard with the molecular formula C5H6BrClN2 and a molecular weight of 209.47 g/mol.
4-Bromo-5-chloro-1,3-dimethyl-1h-pyrazole (C5H6BrClN2) contains a nitrile group, chlorine/bromine 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-Bromo-5-chloro-1,3-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 | C5H6BrClN2 |
| Molecular Weight | 209.47 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-bromo-5-(chloromethyl)-1-methyl-1H-pyrazole (CAS 1356543-56-0)
- 5-Bromo-4-(chloromethyl)-1-methyl-1H-pyrazole (CAS 1879308-39-0)
- 3-Bromo-5-(chloromethyl)-1-methyl-1H-pyrazole (CAS 2109428-60-4)
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Recommended Standards
- 3,3-dichloroprop-2-ene-1-sulfonyl chloride (CAS 29671-75-8)
- 1,3-Dichloro-5-(2-chloroethyl)benzene (CAS 1260784-43-7)
- 1,3-Dichloro-2-(chloromethyl)-4-methylbenzene (CAS 1379325-36-6)
- 3-(Bromomethyl)-4-chloro-1-methyl-1H-pyrazole (CAS 1256562-11-4)
- (4-(Methoxymethyl)phenyl)(methyl)sulfane (CAS 16155-09-2)
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Why CATO?
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