3-Bromo-5-(difluoromethyl)-1H-pyrazole CAS 1015779-72-2
| CAS No. | 1015779-72-2 |
| Molecular Formula | C4H3BrF2N2 |
| Molecular Weight | 196.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 196.98 g/mol gives 3-Bromo-5-(difluoromethyl)-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Bromo-5-(difluoromethyl)-1H-pyrazole (CAS 1015779-72-2) is a high-purity analytical reference standard with the molecular formula C4H3BrF2N2 and a molecular weight of 196.98 g/mol.
Structurally, 3-Bromo-5-(difluoromethyl)-1H-pyrazole (C4H3BrF2N2) contains a nitrile group, fluorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 196.98 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Bromo-5-(difluoromethyl)-1H-pyrazole 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 | C4H3BrF2N2 |
| Molecular Weight | 196.98 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.) | 1988 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-(difluoromethyl)-1H-imidazole (CAS 1216310-31-4)
- 3-Bromo-1-(difluoromethyl)-1H-pyrazole (CAS 1224194-42-6)
- 2-Bromo-5-(difluoromethyl)furan (CAS 1781622-33-0)
- 5-Bromo-1-(difluoromethyl)-1H-pyrazole (CAS 1946823-04-6)
- 5-Bromo-1-(difluoromethyl)-1H-imidazole (CAS 2155856-20-3)
- 2-Bromo-1H-imidazole-4,5-dicarbonitrile (CAS 50847-09-1)
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- 5-Bromo-1,1-difluorospiro[2.3]Hexane (CAS 2306265-27-8)
Recommended Standards
- Au Standard Solution (CAS 7440-57-5)
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- 2-(4-Bromo-3-(difluoromethyl)-1H-pyrazol-1-yl)-2-methylpropanoic acid (CAS 1856047-48-7)
- 3-Bromo-1-(2,2-dimethylpropyl)piperidin-2-one (CAS 1341774-04-6)
- Troxerutin Impurity 2 (CAS 13190-91-5)
- Bis(4-methoxyphenyl)methanamine hydrochloride (CAS 7441-28-3)
- 4,6-Dichloro-3-hydroxyindolin-2-one (CAS 1251038-62-6)
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- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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