(2e)-3-[1-benzyl-3-(2-methoxyphenyl)-1h-pyrazol-4-yl]prop-2-enoic acid CAS 956353-97-2
| CAS No. | 956353-97-2 |
| Molecular Formula | C20H18N2O3 |
| Molecular Weight | 334.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2e)-3-[1-benzyl-3-(2-methoxyphenyl)-1h-pyrazol-4-yl]prop-2-enoic acid (CAS 956353-97-2), molecular formula C20H18N2O3 and molecular weight 334.37 g/mol, is a CATO reference standard with documented purity and traceability.
(2e)-3-[1-benzyl-3-(2-methoxyphenyl)-1h-pyrazol-4-yl]prop-2-enoic acid (C20H18N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C20H18N2O3 |
| Molecular Weight | 334.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (S)-2-((tert-Butoxycarbonyl)amino)-3-((1-methyl-1H-benzo[d]imidazol-2-yl)amino)propanoic acid (CAS 1956437-62-9)
- (3E)-1-Acetyl-4-benzyl-3-(phenylmethylidene)piperazine-2,5-dione (CAS 338750-18-8)
- (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-methoxy-1H-indol-3-yl)propanoic acid (CAS 1956437-39-0)
- (3r)-2-Acetyl-1-phenyl-1h,2h,3h,4h,9h-pyrido[3,4-b]indole-3-carboxylic acid (CAS 956923-54-9)
- (2Z,3E)-1-(4-Chlorophenyl)-2-[2-(4-chlorophenyl)hydrazin-1-ylidene]-3-hydrazinylidenepropan-1-one (CAS 338414-12-3)
- Boc-D-norArg(Boc)2-OH (CAS 2044710-55-4)
- (R)-2-Amino-3-ethylpentanoic acid (CAS 14328-61-1)
- 4-(3-Nitrobenzyl)morpholine (CAS 123207-57-8)
- Ethyl 2-(4-Boc-1-piperazinyl)thiazole-4-carboxylate (CAS 867065-53-0)
- 3-Cyano-2-iodobenzoic acid (CAS 106589-22-4)
- 2-Acetamido-3-methylpent-4-enoic acid (CAS 152648-20-9)
- 5-(Cyanomethyl)-6-(difluoromethyl)-3-(trifluoromethyl)picolinonitrile (CAS 1805584-64-8)
- 4-Bromo-5-(difluoromethyl)-3-methoxypyridin-2-ol (CAS 1805405-03-1)
- Insulin Degludec Impurity 16 (CAS CATO-C4X-215716)
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