3-Bromo-1,4-dimethyl-1H-pyrazole-5-carboxylic acid CAS 13745-19-2
| CAS No. | 13745-19-2 |
| Molecular Formula | C6H7BrN2O2 |
| Molecular Weight | 219.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 3-Bromo-1,4-dimethyl-1H-pyrazole-5-carboxylic acid (CAS 13745-19-2), a certified reference material (molecular formula C6H7BrN2O2, MW 219.04 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H7BrN2O2, 3-Bromo-1,4-dimethyl-1H-pyrazole-5-carboxylic acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 219.04 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.
As a certified reference material (CRM), 3-Bromo-1,4-dimethyl-1H-pyrazole-5-carboxylic acid 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 | C6H7BrN2O2 |
| Molecular Weight | 219.04 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-(4-bromo-1h-pyraZol-1-yl)acetohydrazide (CAS 1001500-63-5)
- 2-Bromo-3,5-dimethoxypyrazine (CAS 1033610-34-2)
- Methyl 2-(3-bromo-1H-pyrazol-1-yl)acetate (CAS 1034047-87-4)
- 4-Bromo-5-methyl-1H-pyrazole-3-carbohydrazide (CAS 1043909-04-1)
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- 6-Bromo-1,1,1-trifluorohexane (CAS 111670-37-2)
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Recommended Standards
- 5-Bromo-1,3-dimethyl-1H-pyrazole-4-carboxylic acid, 97% (CAS 1369357-72-1)
- 3-Bromo-1-ethyl-1H-pyrazole-4-carboxylic acid (CAS 1399664-50-6)
- 4-Bromo-1,5-dimethyl-1H-imidazole-2-carboxylic acid (CAS 1367934-84-6)
- 1-(2-Bromoethyl)-1H-pyrazole-4-carboxylic acid (CAS 1403566-74-4)
- {allyl[(4-chlorophenyl)sulfonyl]amino}acetic acid (CAS 744203-97-2)
- Allyl 1H,1H,2H,2H-perfluorooctyl ether (CAS 103628-86-0)
- N-(2-(6-Oxo-3-(1H-1,2,4-triazol-1-yl)pyridazin-1(6H)-yl)ethyl)furan-2-carboxamide (CAS 1798024-83-5)
- 3-(3-Fluoro-4-methylphenyl)acrylaldehyde (CAS 1563288-83-4)
- 7-Fluoroindole-3-acetic Acid (CAS 170893-02-4)
- tert-Butyl (3R,4S)-4-methylpyrrolidin-3-ylcarbamate hydrochloride (CAS 2173637-27-7)
- N,N-Dimethyl-4-(10-methyl-9,10-dihydroacridin-9-yl)aniline (CAS 60891-64-7)
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- Ethyl (6-chloropyrazin-2-yl)glycinate (CAS 1228013-59-9)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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