5-(Bromomethyl)-1,3-dimethyl-1H-pyrazole CAS 873191-23-2
| CAS No. | 873191-23-2 |
| Molecular Formula | C6H9BrN2 |
| Molecular Weight | 189.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(Bromomethyl)-1,3-dimethyl-1H-pyrazole is closely related to a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-(Bromomethyl)-1,3-dimethyl-1H-pyrazole (CAS 873191-23-2) is a high-purity analytical reference standard with the molecular formula C6H9BrN2 and a molecular weight of 189.05 g/mol.
5-(Bromomethyl)-1,3-dimethyl-1H-pyrazole (C6H9BrN2) contains a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C6H9BrN2 |
| Molecular Weight | 189.05 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.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromomethyl Standards
- 4-(Bromomethyl)-1,5-dimethyl-1h-pyrazole (CAS 1256561-79-1)
- 5-(Bromomethyl)-1-ethyl-1h-imidazole (CAS 1256561-80-4)
- 3-(Bromomethyl)-2,5-dimethylfuran (CAS 1260812-77-8)
- 2-(Bromomethyl)-1-ethyl-1h-imidazole (CAS 1420957-14-7)
- 3-(Bromomethyl)-1,5-dimethyl-1H-pyrazole (CAS 864550-79-8)
- 2-(Bromomethyl)spiro[3.3]Heptane (CAS 102115-83-3)
- 5-(Bromomethyl)cyclohept-1-ene (CAS 113358-31-9)
- 4-(Bromomethyl)hepta-1,6-diene (CAS 116705-89-6)
Recommended Standards
- 4-Bromopiperidine-4-carbonitrile (CAS 2091111-58-7)
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- 5-Bromo-6-ethyl-1,6-dihydropyrimidine (CAS 224429-98-5)
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- Pazopanib Impurity 56 (CAS CATO-C4X-172556)
- 3-(5-Phenyl-1H-1,2,4-triazol-3-yl)-2H-chromen-2-one (CAS 180403-55-8)
- 4-Methoxy-3,5-dimethylpicolinamide (CAS 187222-21-5)
- 110623-43-3 1-(4-chlorobenzoyl)-2,4-dimethylthiosemicarbazide MFCD11227242 (CAS 110623-43-3)
- 6-Hydrazinyl-2-methylpyridine-3-sulfonamide (CAS 1355180-79-8)
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