4-Bromo-1-methyl-5-(propoxymethyl)-1H-pyrazole CAS 1855944-58-9
| CAS No. | 1855944-58-9 |
| Molecular Formula | C8H13BrN2O |
| Molecular Weight | 233.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-1-methyl-5-(propoxymethyl)-1H-pyrazole (CAS 1855944-58-9), molecular formula C8H13BrN2O and molecular weight 233.11 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H13BrN2O, 4-Bromo-1-methyl-5-(propoxymethyl)-1H-pyrazole contains an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 233.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 4-Bromo-1-methyl-5-(propoxymethyl)-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 | C8H13BrN2O |
| Molecular Weight | 233.11 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.) | 1995 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-bromo-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1000340-35-1)
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- 4-Bromo-1-[2-(dimethylamino)ethyl]-1h-pyrazol-3-amine (CAS 1249544-10-2)
- 1-(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)propan-2-ol (CAS 1249695-94-0)
- 6-bromo-2H-2,7-naphthyridin-1-one (CAS 1260671-39-3)
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Recommended Standards
- 1-(4-Bromo-3-methyl-1H-pyrazol-1-yl)-2-methylpropan-2-ol (CAS 1853185-71-3)
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- 5-bromo-1-methyl-3H-pyrrolo[2,3-b]pyridin-2-one (CAS 175424-31-4)
- 4-Bromo-5-(isopropoxymethyl)-1-methyl-1H-pyrazole (CAS 1856019-50-5)
- [1,2,4,5]Tetrazino[1,6-a:4,3-a']diquinoline (CAS 13090-26-1)
- 1-(Pyridin-4-yl)-3-(quinolin-2-yl)prop-2-en-1-one (CAS 4382-63-2)
- 3-Bromo-3-(1,3-dioxolan-2-yl)benzophenone (CAS 898779-15-2)
- 2-chloro-6-methyl-thieno[3,2-d]pyrimidine (CAS 2033057-21-3)
- ethyl 6-amino-7-methyl-1,5-naphthyridine-3-carboxylate (CAS 2891456-59-8)
- methyl 4-(2-cyanoethyl)morpholine-3-carboxylate (CAS 1564865-13-9)
- (4-Amino-2-fluorophenyl)dimethylphosphine oxide (CAS 2444346-64-7)
- 6-Amino-5-(difluoromethyl)-4-nitropyridine-3-sulfonamide (CAS 1806798-56-0)
- methyl N-(2-amino-1,2-dicyanoeth-1-en-1-yl)methanecarboximidate (CAS 123060-28-6)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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