4-(bromomethyl)-3-(difluoromethyl)-1-methyl-1H-pyrazole CAS 1694474-39-9
| CAS No. | 1694474-39-9 |
| Molecular Formula | C6H7BrF2N2 |
| Molecular Weight | 225.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(bromomethyl)-3-(difluoromethyl)-1-methyl-1H-pyrazole is closely related to a nitrile group, fluorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-(bromomethyl)-3-(difluoromethyl)-1-methyl-1H-pyrazole (CAS 1694474-39-9), molecular formula C6H7BrF2N2 and molecular weight 225.03 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H7BrF2N2, 4-(bromomethyl)-3-(difluoromethyl)-1-methyl-1H-pyrazole contains a nitrile group, fluorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 225.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H7BrF2N2 |
| Molecular Weight | 225.03 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.) | 1994 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related bromomethyl Standards
- 4-(Bromomethyl)-5-(difluoromethyl)-1-methyl-1h-pyrazole (CAS 1525015-38-6)
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Recommended Standards
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- (R)-5-(Iodomethyl)pyrrolidin-2-one (CAS 128811-46-1)
- tert-Butyl 4-ethynyl-5,6-dihydropyridine-1(2H)-carboxylate (CAS 177984-28-0)
- 2-[(dimethylamino)methyl]-1,3-benzoxazol-5-amine (CAS 925920-66-7)
- 8-Bromonaphtho[2,1-b]benzofuran (CAS 1846601-97-5)
- (S)-4-Iodo-1-(pyrrolidin-3-yl)-1H-pyrazole hydrochloride (CAS 2828444-29-5)
- 4-Bromo-3-cyano-5-(difluoromethyl)benzenesulfonyl chloride (CAS 1805580-99-7)
- (R)-N-Boc-1,2,3,4-tetrahydroisoquinoline-3-carboxylic Acid (CAS 115962-35-1)
- H-Pro-AMC (hydrobromide) (CAS 115388-93-7)
- 3-Bromo-2-(trifluoromethyl)-6,6a,7,7a-tetrahydro-4H-cyclopropa[3,4]pyrrolo[1,2-a]pyrimidin-4-one (CAS 2648792-82-7)
- 2779AF 905811-03-2 C15H16N2O N-(5-Amino-2-methylphenyl)-3-methylbenzamide (CAS 905811-03-2)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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