4-Bromo-1,5-dimethylpyrazole CAS 5775-86-0
| CAS No. | 5775-86-0 |
| Molecular Formula | C5H7BrN2 |
| Molecular Weight | 175.03 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 4-Bromo-1,5-dimethylpyrazole (CAS 5775-86-0), a certified reference material (molecular formula C5H7BrN2, MW 175.03 g/mol) for analytical method development and quality control.
Owing to a nitrile group, bromine substitution, 4-Bromo-1,5-dimethylpyrazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 4-Bromo-1,5-dimethylpyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H7BrN2 |
| Molecular Weight | 175.03 g/mol |
| Appearance | 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 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.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-5-ethyl-1H-pyrazole (CAS 1015779-23-3)
- 5-Bromo-2,4-dimethyl-1H-imidazole (CAS 1049118-07-1)
- 3-Bromo-1-ethyl-1H-pyrazole (CAS 1216504-91-4)
- 4-bromo-1H-pyrrole-2-carbonitrile (CAS 1221435-18-2)
- 5-Bromo-1-ethyl-1h-pyrazole (CAS 1268334-99-1)
- (4-Bromo-1h-pyrrol-2-yl)methanamine (CAS 1354952-66-1)
- 5-Bromo-1-ethyl-1H-imidazole (CAS 1429028-32-9)
- 4-Bromo-2-ethyl-1H-imidazole (CAS 145575-91-3)
Recommended Standards
- 4-Bromo-1,3-dimethylpyrazole (CAS 5775-82-6)
- 4-Bromo-1-ethyl-1H-imidazole (CAS 875340-91-3)
- 4-(bromomethyl)-5-methyl-1H-imidazole hydrobromide (CAS 72836-00-1)
- 4-Bromo-1-ethylpyrazole (CAS 71229-85-1)
- 2-(Trifluoromethyl)-3-(3,3,3-trifluoropropoxy)pyridine (CAS 1707358-18-6)
- Methyl 2-(dimethoxymethyl)-3-methylbutanoate (CAS 143770-73-4)
- 3-Methoxy-4-(prop-2-yn-1-ylamino)benzoic acid (CAS 2228938-95-0)
- 1-(5-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethanone (CAS 1375303-71-1)
- Dimethyl Tetrahydropyran-4,4-dicarboxylate (CAS 149777-00-4)
- 4-(Pyrrolidin-3-yl)-3,4-dihydroquinoxalin-2(1h)-one (CAS 1251080-79-1)
- Atrazine-d5 (CAS 163165-75-1)
- Ethyl (R)-2-Amino-3-(bromoamino)propanoate Hydrochloride (CAS 1384268-52-3)
- N-isopropyl-2-(pyridin-2-yl)-6-(trifluoromethyl)pyrimidin-4-amine (CAS 338418-21-6)
- C-Peptide (human) (CAS 33017-11-7)
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