4-(5-(2,3-Dimethoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid CAS 377761-78-9
| CAS No. | 377761-78-9 |
| Molecular Formula | C21H22N2O5 |
| Molecular Weight | 382.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(5-(2,3-Dimethoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (C21H22N2O5) contains a flavonoid 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.
4-(5-(2,3-Dimethoxyphenyl)-3-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 377761-78-9), molecular formula C21H22N2O5 and molecular weight 382.41 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C21H22N2O5 |
| Molecular Weight | 382.41 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Dimethoxyphenyl Standards
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Recommended Standards
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- 4-(3-Methoxyphenyl)-N-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)piperazine-1-carboxamide (CAS 866144-61-8)
- 4-[4-(4-Methylbenzoyl)piperazino]-3-nitrobenzenecarbaldehyde O-methyloxime (CAS 383147-17-9)
- 2-chloro-4-methylbenzene-1-sulfonyl chloride (CAS 55311-94-9)
- 3-(Tetrahydrofuran-3-yl)-2h-indazole hydrochloride (CAS 2197053-96-4)
- Octahydro-1H-thieno[3,4:3,4]cyclobuta[1,2-c]pyrrole 2,2-dioxide (CAS 1713602-32-4)
- 4-Chloro-1-(3,4-dichlorobenzyl)-1,2-dihydro-3h-pyrazol-3-imine (CAS 1001519-30-7)
- 3,6-Di([1,1':3',1''-terphenyl]-5'-yl)-9-phenyl-9H-carbazole (CAS 1201649-79-7)
- 3-{2-[(4-Bromobenzyl)oxy]ethyl}piperidinehydrochloride (CAS 1220038-88-9)
- 1-((Tetrahydrofuran-3-yl)methyl)-1H-pyrazol-5-amine (CAS 1052564-96-1)
- 4-Chloro-N-(2-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]sulfanyl}ethyl)benzamide (CAS 1708126-06-0)
- 1-(1-Methyl-1H-pyrazol-4-yl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid (CAS 1314388-88-9)
- (Ser(PO?H?)2?2)-Tau Peptide (260-264) PAb Blocking trifluoroacetate salt (CAS 2022956-57-4)
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