4-Bromo-3-(sec-butoxymethyl)-1-(difluoromethyl)-1H-pyrazole CAS 1856074-90-2
| CAS No. | 1856074-90-2 |
| Molecular Formula | C9H13BrF2N2O |
| Molecular Weight | 283.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Bromo-3-(sec-butoxymethyl)-1-(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.
4-Bromo-3-(sec-butoxymethyl)-1-(difluoromethyl)-1H-pyrazole (CAS 1856074-90-2), molecular formula C9H13BrF2N2O and molecular weight 283.11 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H13BrF2N2O, 4-Bromo-3-(sec-butoxymethyl)-1-(difluoromethyl)-1H-pyrazole contains an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 283.11 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.
Physical & Chemical Properties
| Molecular Formula | C9H13BrF2N2O |
| Molecular Weight | 283.11 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.) | 1995 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-Bromo-4,6-difluoro-3'-methyl-1,1'-biphenyl (CAS 1071866-13-1)
- 4-[bromo(phenyl)methyl]-1,2-difluorobenzene (CAS 1248278-90-1)
- 4-Bromo-5-(butoxymethyl)-1-(difluoromethyl)-1H-pyrazole (CAS 1856019-59-4)
- 4-Bromo-3-((2,2-difluoroethoxy)methyl)-1-propyl-1H-pyrazole (CAS 1856028-30-2)
- 4-Bromo-1-(2,2-difluoroethyl)-5-(isopropoxymethyl)-1H-pyrazole (CAS 1856089-18-3)
- 4-Bromo-1-(difluoromethyl)-5-(isobutoxymethyl)-1H-pyrazole (CAS 1856089-39-8)
- 4-Bromo-5-(sec-butoxymethyl)-1-(difluoromethyl)-1H-pyrazole (CAS 1856099-38-1)
- 1-Bromo-2-(difluoro(phenyl)methyl)benzene (CAS 263249-01-0)
Recommended Standards
- 2-Chloro-N-(5-chloro-2-hydroxyphenyl)nicotinamide (CAS 153144-00-4)
- 1-[(4-Iodophenyl)methyl]-1H-pyrrole (CAS 143128-29-4)
- 3-[5-(3,4-Dichlorophenyl)-2-furyl]acrylic acid (CAS 188438-05-3)
- 3-Chloro-4-(4-chlorophenoxy)benzoic acid (CAS 1384431-04-2)
- Ethyl 2,2-dimethyl-2,3-dihydro-1H-indene-4-carboxylate (CAS 2641591-96-8)
- 5-Anilinopyrimidine-2,4(1H,3H)-dione (CAS 4870-31-9)
- Ethyl 3-(Chlorosulfonyl)propionate (CAS 103472-25-9)
- Methyl 5-amino-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 1352412-93-1)
- N-(2-methylbenzo[d]oxazol-6-yl)-3-(trifluoromethyl)benzamide (CAS 861210-65-3)
- Methyl 1-(3-chlorobenzyl)-2-oxo-1,2-dihydropyridine-3-carboxylate (CAS 338754-64-6)
- Posaconazole Impurity 38 (CAS CATO-C4X-120838)
- (2S,3S)-3-(4-bromo-1H-pyrazol-1-yl)butan-2-ol (CAS 2432829-95-1)
- Teneligliptin Impurity 59 (CAS CATO-C4X-176059)
- D-Lys16-Tirzepatide (CAS CATO-CPTD788918)
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