4-Bromo-1-methyl-3-nitro-1h-pyrazole-5-carboxylic acid CAS 84547-89-7
| CAS No. | 84547-89-7 |
| Molecular Formula | C5H4BrN3O4 |
| Molecular Weight | 250.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-Bromo-1-methyl-3-nitro-1h-pyrazole-5-carboxylic acid (CAS 84547-89-7), a certified reference material (molecular formula C5H4BrN3O4, MW 250.01 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H4BrN3O4, 4-Bromo-1-methyl-3-nitro-1h-pyrazole-5-carboxylic acid contains a carbohydrate-derived structure, an amide group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 250.01 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C5H4BrN3O4 |
| Molecular Weight | 250.01 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 sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
- Methyl 4-bromo-3-nitro-1H-pyrazole-5-carboxylate (CAS 1187560-11-7)
- 2-(4-Bromo-3-nitro-1H-pyrazol-1-yl)acetic acid (CAS 375349-69-2)
- 4-Bromo-1-methyl-5-nitro-1H-pyrazole-3-carboxylic acid (CAS 84547-91-1)
- Methyl 4-bromo-5-nitrofuran-2-carboxylate (CAS 1403566-15-3)
- 6-Bromo-3-(difluoromethoxy)pyrazine-2-carbonitrile (CAS 2812355-09-0)
- (4-Bromo-5-fluoro-2-nitrophenyl)methanol (CAS 1132682-66-6)
- 5-Bromo-1-fluoro-3-methoxy-2-nitrobenzene (CAS 1137869-91-0)
- 2-Bromo-3-fluoro-4-methoxy-1-nitrobenzene (CAS 1170991-77-1)
Recommended Standards
- 3-Fluoro-5-iodobenzaldehyde (CAS 914636-93-4)
- 3-Fluoro-2-iodobenzaldehyde (CAS 905808-02-8)
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- 2-Fluoro-4-iodobenzaldehyde (CAS 699016-40-5)
- 2,3-Dichloro-3-(1,3-dioxolan-2-yl)benzophenone (CAS 898759-49-4)
- Ethyl Levulinate (CAS 539-88-8)
- (R)-4-(2-hydroxy-1-(2-methoxyphenyl)ethoxy)cyclohexan-1-one (CAS 1434656-14-0)
- 2-borono-1-(tert-butoxycarbonyl)-1H-indole-5-carboxylic acid (CAS 913388-58-6)
- 7-Fluoro-4,4-dimethyl-1,2,3,4-tetrahydro-1,8-naphthyridin-2-one (CAS 846035-55-0)
- 3-Chloro-5-(hydroxymethyl)benzoic Acid (CAS 153203-56-6)
- N-(3-(4-Fluorobenzyl)-1H-1,2,4-triazol-5-yl)-5-(pyridin-3-yl)-1H-pyrazole-3-carboxamide (CAS 1489255-89-1)
- Allisartan Isoproxil Impurity 26 (CAS CATO-C4X-321726)
- 2-(2-Oxopropyl)phenoxyacetic acid (CAS 412962-61-9)
- Semaglutide Impurity 144 (CAS 394210-59-4)
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