3-Bromo-1-(4-methylphenyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid CAS 1384428-61-8
| CAS No. | 1384428-61-8 |
| Molecular Formula | C11H11BrN2O2 |
| Molecular Weight | 283.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Bromo-1-(4-methylphenyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1384428-61-8), a certified reference material (molecular formula C11H11BrN2O2, MW 283.12 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 3-Bromo-1-(4-methylphenyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 283.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 3-Bromo-1-(4-methylphenyl)-4,5-dihydro-1h-pyrazole-5-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 | C11H11BrN2O2 |
| Molecular Weight | 283.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 1-(5-Bromo-2-fluoro-4-methylsulfonyl)-phenylhydrazine (CAS 1020722-17-1)
- Ethyl 3-bromo-5-methylimidazo[1,2-a]pyridine-2-carboxylate (CAS 1123167-64-5)
- Ethyl 3-bromo-5-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylate (CAS 1132610-85-5)
- 6'-Bromo-1',2'-dihydrospiro[oxane-4,3'-pyrrolo[3,2-b]pyridine]-2'-one (CAS 1190862-19-1)
- Ethyl 5-bromo-4-methylbenzofuran-2-carboxylate (CAS 1192172-68-1)
- 6-Bromo-2-ethyl-8-methylimidazo[1,2-a]pyridine-3-carboxylic acid (CAS 1215914-45-6)
- Ethyl 5-bromo-3-cyano-4,6-dimethylpicolinate (CAS 1221791-96-3)
- Methyl 6-bromo-1-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate (CAS 1254192-15-8)
Recommended Standards
- 4-(7-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-yl)morpholine (CAS 1380331-16-7)
- Methyl 3-(4-bromo-1H-benzo[d]imidazol-2-yl)propanoate (CAS 1420792-89-7)
- Ethyl 5-(bromomethyl)-1-benzofuran-2-carboxylate (CAS 137997-18-3)
- Methyl 2-(5-bromo-6-methylbenzofuran-3-yl)acetate (CAS 1420793-01-6)
- 2-(4-Bromo-2-fluorophenoxy)-N-isopropylacetamide (CAS 923105-75-3)
- 6-Chloro-5-fluoro-3-pyridinecarbonyl chloride (CAS 78686-85-8)
- 6-(Adamantan-1-yl)-2-((4-(tert-butyl)benzyl)thio)nicotinonitrile (CAS 625371-03-1)
- 4,5,6,7-Tetrahydro-2H-pyrazolo[4,3-c]pyridin-3-amine (CAS 933696-80-1)
- 3-(1-(3-Fluorobenzyl)-5,6-dimethyl-1H-benzo[d]imidazol-2-yl)pyridin-2(1H)-one (CAS 860787-72-0)
- (S)-2-Amino-8-oxodecanoic Acid Methyl Ester (CAS 635680-16-9)
- 5-Bromo-3-((2-fluoro-4-methylphenyl)imino)indolin-2-one (CAS 1092344-24-5)
- (R)-1-(6-Methoxynaphthalen-2-yl)ethanamine (CAS 132951-65-6)
- Methyl 3,5-dibromo-2,4-difluorophenylacetate (CAS 1807040-65-8)
- FMRF-Like Peptide from snail Helix aspersa (CAS 98495-35-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com