4-(5-(4-Bromophenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid CAS 385406-13-3
| CAS No. | 385406-13-3 |
| Molecular Formula | C19H17BrN2O3 |
| Molecular Weight | 401.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(5-(4-Bromophenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 385406-13-3) is a high-purity analytical reference standard with the molecular formula C19H17BrN2O3 and a molecular weight of 401.25 g/mol.
The molecular framework of 4-(5-(4-Bromophenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (C19H17BrN2O3) is characterized by a steroid core, an amide 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).
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.
Physical & Chemical Properties
| Molecular Formula | C19H17BrN2O3 |
| Molecular Weight | 401.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromophenyl Standards
- [5-(4-Bromophenyl)-3-methylisoxazol-4-yl]carbamic acid(R)-1-phenylethyl ester (CAS 1228690-37-6)
- 4-(3-(4-Bromophenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 313399-13-2)
- Benzyl 4-(3-bromophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 295344-60-4)
- Ethyl 4-(3-bromophenyl)-6-hydroxy-2-phenyl-4,5-dihydropyrimidine-5-carboxylate (CAS 400078-27-5)
- Ethyl 4-(4-bromophenyl)-6-hydroxy-2-phenyl-4,5-dihydropyrimidine-5-carboxylate (CAS 477867-22-4)
- 1-(4-Bromophenyl)-N-(4-ethoxyphenyl)-5-methyl-1H-1,2,3-triazole-4-carboxamide (CAS 866872-71-1)
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Recommended Standards
- 4-(2-(2-(2-Bromo-4-(tert-butyl)phenoxy)acetyl)hydrazinyl)-4-oxobutanoic acid (CAS 816442-95-2)
- Ethyl 2-(3-(benzyloxycarbonylamino)-4-bromobutanamido)acetate (CAS 959246-79-8)
- 3-((2-acetylphenoxy)methyl)-4-bromo-2-methyl-1-phenyl-3-pyrazolin-5-one (CAS 497061-10-6)
- 2-Bromo-N-(isoquinolin-5-yl)-4,5-dimethoxy-N-methylbenzamide (CAS 917596-87-3)
- 4-(Isopropylthio)aniline (CAS 2976-70-7)
- 2-(2,4-Dichlorophenyl)-2,2-difluoroacetic acid (CAS 1552586-81-8)
- tert-butyl N-{2-[(6-fluoropyrimidin-4-yl)amino]ethyl}carbamate (CAS 1699012-21-9)
- (1R,2S)-4-(tert-butoxycarbonyl)-2-guanidinocyclohexane-1-carboxylic acid (CAS 1263045-22-2)
- 6-Nitro-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indol-1-one (CAS 17952-86-2)
- 2-(Cyclopropoxy)ethylamine Hydrochloride (CAS 1147107-78-5)
- Fulvic Acid (CAS 479-66-3)
- (2'-Methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-yl)(1'-methyl-6,7-dihydrospiro[furo[2,3-f]indole-3,4'-piperidin]-5(2H)-yl)methanone (CAS 180083-23-2)
- 4-Bromo-2-chloro-5-methylaniline (CAS 888485-27-6)
- Gastric Inhibitory Polypeptide (1-30) amide (porcine) (CAS 134846-93-8)
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