3-Bromo-5-ethoxy-4-methyl-1H-pyrazole CAS 312312-05-3
| CAS No. | 312312-05-3 |
| Molecular Formula | C6H9BrN2O |
| Molecular Weight | 205.05 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.
3-Bromo-5-ethoxy-4-methyl-1H-pyrazole (CAS 312312-05-3) is a high-purity analytical reference standard with the molecular formula C6H9BrN2O and a molecular weight of 205.05 g/mol.
3-Bromo-5-ethoxy-4-methyl-1H-pyrazole (C6H9BrN2O) 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.
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 | C6H9BrN2O |
| Molecular Weight | 205.05 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.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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Recommended Standards
- 3-(2-Bromoethoxy)cyclopent-2-enone (CAS 42858-97-9)
- 4-(2-Bromoethyl)-5-methyl-1H-pyrazol-3(2H)-one (CAS 791049-61-1)
- 2-Bromo-3-methoxycyclohex-2-en-1-one (CAS 85493-96-5)
- 4-(Bromomethyl)-3-ethylfuran-2(5H)-one (CAS 549546-06-7)
- 4-Amino-1-(2-fluoroethyl)-1H-pyrazole-3-carboxylic acid (CAS 1429418-72-3)
- 6-Methoxy-1-methyl-2,3-dihydroquinolin-4(1H)-one (CAS 3954-50-5)
- 3-(2-Fluorophenyl)-5-(1-methyl-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-3-yl)-1,2,4-oxadiazole hydrochloride (CAS 1306739-63-8)
- 2-((2,3-Difluorobenzyl)amino)propane-1,3-diol (CAS 1494087-14-7)
- Methyl 5-cyano-1H-indole-2-carboxylate (CAS 1245648-71-8)
- 4-Bromo-1-(4-(trifluoromethyl)phenyl)-1H-imidazole (CAS 1353856-15-1)
- 3-Bromo-2,5-difluorobenzaldehyde (CAS 112279-64-8)
- 2-(6,7-Dihydro-1H-[1,4]dioxino[2',3':4,5]benzo[1,2-d]imidazol-2-yl)ethan-1-amine (CAS 933705-16-9)
- 1,4-Diazabicyclo[2.2.2]octane Dihydrobromide (CAS 54581-69-0)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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