4-Bromo-1-methylpyrazole-3-carboxylic Acid CAS 84547-86-4
| CAS No. | 84547-86-4 |
| Molecular Formula | C5H5BrN2O2 |
| Molecular Weight | 205.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Bromo-1-methylpyrazole-3-carboxylic Acid (C5H5BrN2O2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-Bromo-1-methylpyrazole-3-carboxylic Acid (CAS 84547-86-4), molecular formula C5H5BrN2O2 and molecular weight 205.01 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 4-Bromo-1-methylpyrazole-3-carboxylic Acid 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 | C5H5BrN2O2 |
| Molecular Weight | 205.01 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 DMSO, DMF, methanol |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-methyl-1H-imidazole-2-carboxylic acid (CAS 1027134-70-8)
- 5-Bromo-2-methyl-1H-imidazole-4-carboxylic acid (CAS 1093261-50-7)
- 5-Bromo-1-methyl-1,4-dihydropyrazine-2,3-dione (CAS 1133433-93-8)
- 5-Bromo-3-hydroxy-1-methylpyrazin-2(1H)-one (CAS 1133573-50-8)
- 5-bromo-4-methyl-1H-imidazole-2-carboxylic acid (CAS 1171125-21-5)
- 2-(4-Bromo-1H-imidazol-1-yl)acetic acid (CAS 1211524-53-6)
- 5-Bromo-N-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 1232793-93-9)
- Methyl 5-bromo-1H-pyrazole-3-carboxylate (CAS 1328893-17-9)
Recommended Standards
- 4-Bromo-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 84547-84-2)
- 4-Bromo-5-hydroxy-2-methyl-2H-pyridazin-3-one (CAS 64178-59-2)
- 4-Bromo-1h-pyrazole-3-carbohydrazide (CAS 56976-82-0)
- 4-Bromo-5-methyl-1,2-dihydropyridazine-3,6-dione (CAS 732295-61-3)
- 5-(1H-Imidazole-1-carbonyl)-2-methylpyridin-4(1H)-one (CAS 88252-30-6)
- 3-((Methylsulfonyl)methyl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 1850326-59-8)
- 5-Nitro-3-phenyl-1H-pyrazolo[3,4-b]pyridine (CAS 98157-48-3)
- 4-Carbamoyl-3-methylbenzoic acid (CAS 167627-39-6)
- (2,5-Dioxa-8-azaspiro[3.5]Nonan-6-yl)methanol (CAS 2366180-41-6)
- Methyl 5-formyl-1-methyl-1H-pyrazole-4-carboxylate (CAS 1518469-18-5)
- alfa-Costic acid (CAS 28399-17-9)
- (S)-1-(2-methoxyphenyl)propan-1-amine hydrochloride (CAS 873893-95-9)
- 1-(2,3-Dichlorophenyl)pyrrolidine-2,5-dione (CAS 37010-36-9)
- Exenatide (CAS 141758-74-9)
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