Methyl 5-bromo-1-methyl-1H-pyrazole-4-carboxylate CAS 1779741-76-2
| CAS No. | 1779741-76-2 |
| Molecular Formula | C6H7BrN2O2 |
| Molecular Weight | 219.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-bromo-1-methyl-1H-pyrazole-4-carboxylate (CAS 1779741-76-2), molecular formula C6H7BrN2O2 and molecular weight 219.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Methyl 5-bromo-1-methyl-1H-pyrazole-4-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 219.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Methyl 5-bromo-1-methyl-1H-pyrazole-4-carboxylate 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 | 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.) | 1994 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Methyl 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)
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Recommended Standards
- 5-Bromo-4-ethyl-1H-pyrazole-3-carboxylic acid (CAS 1779582-02-3)
- 2-Bromo-1,4-dimethyl-1H-imidazole-5-carboxylic acid (CAS 1782559-23-2)
- Methyl 5-bromo-4-methyl-1H-pyrazole-3-carboxylate (CAS 1779345-41-3)
- 3-Bromo-5-methoxy-1-methyl-1H-pyrazole-4-carbaldehyde (CAS 1783385-41-0)
- 2-Acetamido-2-methylpropanoic acid (CAS 5362-00-5)
- Indane-5-carboxylic Acid (CAS 65898-38-6)
- 1-(1-Ethyl-1H-pyrazol-5-yl)-N-((1-(2-fluoroethyl)-1H-pyrazol-5-yl)methyl)methanamine hydrochloride (CAS 1856049-88-1)
- Diethyl 4-(4-chlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate (CAS 35929-79-4)
- 5-Hydroxy Clethodim (CAS 116007-18-2)
- [Met5,Arg6] Enkephalin (CAS 76310-14-0)
- 5-Amino-6-(4-(pentyloxy)phenyl)pyridazin-3(2H)-one (CAS 122322-99-0)
- 2-Chloro-1-(6-fluoro-3,4-dihydro-2H-chromen-2-yl)ethanone (CAS 943126-72-5)
- (R)-1-(3-chloro-4-methylphenyl)-2-methoxyethan-1-amine (CAS 1270055-65-6)
- Insulin degludec (CAS 844439-96-9)
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