4-Bromopyrazole-3-carbaldehyde CAS 287917-97-9
| CAS No. | 287917-97-9 |
| Molecular Formula | C4H3BrN2O |
| Molecular Weight | 174.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromopyrazole-3-carbaldehyde (C4H3BrN2O) contains an amide group, a hydroxyl group, an ether linkage, 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.
4-Bromopyrazole-3-carbaldehyde (CAS 287917-97-9) is a high-purity analytical reference standard with the molecular formula C4H3BrN2O and a molecular weight of 174.98 g/mol.
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-Bromopyrazole-3-carbaldehyde 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 | C4H3BrN2O |
| Molecular Weight | 174.98 g/mol |
| Appearance | Off-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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromopyrazole Standards
- 4-Bromopyrazole-3-carbonitrile (CAS 288246-16-2)
- 5-Bromopyrazole-3-carboxylic Acid (CAS 1328893-16-8)
- 4-Bromopyrazole-3-carboxylic Acid (CAS 13745-17-0)
- 3-Bromopyrazole (CAS 14521-80-3)
- Methyl 4-Bromopyrazole-3-carboxylate (CAS 81190-89-8)
- Ethyl 3-Bromopyrazole-4-carboxylate (CAS 1353100-91-0)
- 1-Boc-4-bromopyrazole (CAS 1150271-23-0)
Recommended Standards
- 4-Bromo-2H-pyran-2-one (CAS 505097-65-4)
- 4-Bromopyridazin-3(2H)-one (CAS 22626-56-8)
- 3-Bromo-2H-pyran-2-one (CAS 19978-32-6)
- 4-Bromopyrimidin-2(1H)-one (CAS 548767-83-5)
- 9H-Fluoren-9-ylmethyl N-[(2R)-1-oxo-3-[(triphenyl-methyl)sulfanyl]propan-2-yl]carbamate (CAS 505076-77-7)
- 3-(Methoxycarbonyl)-4-methylbenzoic acid (CAS 167300-06-3)
- Ethyl 5-amino-4-cyano-1-(2-fluorophenyl)pyrazole-3-carboxylate (CAS 1150164-20-7)
- 6-(Trifluoromethyl)pyridin-3-yl trifluoromethanesulfonate (CAS 1097778-74-9)
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- 1-Bromo-1-(4-chloro-3-(methylsulfonyl)phenyl)propan-2-one (CAS 914382-89-1)
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- 3-((1-Aminobutan-2-yl)oxy)propane-1,2-diol (CAS 152398-98-6)
- Tenivastatin calcium (CAS 530112-57-3)
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