4-Hydroxy-N-(3-methoxyphenyl)-2-oxo-1-propyl-1,2-dihydroquinoline-3-carboxamide CAS 303093-38-1
| CAS No. | 303093-38-1 |
| Molecular Formula | C20H20N2O4 |
| Molecular Weight | 352.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 352.38 g/mol gives 4-Hydroxy-N-(3-methoxyphenyl)-2-oxo-1-propyl-1,2-dihydroquinoline-3-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Hydroxy-N-(3-methoxyphenyl)-2-oxo-1-propyl-1,2-dihydroquinoline-3-carboxamide (CAS 303093-38-1), molecular formula C20H20N2O4 and molecular weight 352.38 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Hydroxy-N-(3-methoxyphenyl)-2-oxo-1-propyl-1,2-dihydroquinoline-3-carboxamide (C20H20N2O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. 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. 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 4-Hydroxy-N-(3-methoxyphenyl)-2-oxo-1-propyl-1,2-dihydroquinoline-3-carboxamide 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 | C20H20N2O4 |
| Molecular Weight | 352.38 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 Hydroxy Standards
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Recommended Standards
- 4-Cbz-amino-2-Boc-amino-butyric acid (CAS 47461-65-4)
- 4'-O-Hexanoyldaidzein (CAS 602329-51-1)
- 4-Bromo-1-(triisopropylsilyl)-1H-indole (CAS 412048-44-3)
- 5-(4-(4-(Prop-2-yn-1-yloxy)benzoyl)phenoxy)pentanoic acid (CAS 2140866-79-9)
- (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-cyclooctylpropanoic acid (CAS 1997411-46-7)
- (3S,4R)-1-tert-Butyl 3-methyl 4-(8-pivaloyl-5,6,7,8-tetrahydro-1,8-naphthyridin-3-yl)pyrrolidine-1,3 (CAS 1420780-19-3)
- Benzyl (2,2-dimethylbut-3-yn-1-yl)carbamate (CAS 1393541-18-8)
- (E)-3-(3-methoxyphenyl)-2-methylacrylic acid (CAS 849831-37-4)
- N-(4-Methylphenyl)-2-pyrrolidinecarboxamidehydrochloride (CAS 1236257-25-2)
- Ethyl 1-(3-bromo-2-cyanophenyl)piperidine-4-carboxylate (CAS 1260897-03-7)
- 3-(5-Bromofuran-2-yl)pyridine (CAS 55484-31-6)
- 2-(1H-Benzo[d]imidazol-1-yl)-N-phenylacetamide (CAS 116488-20-1)
- Allyl 2,4-dichlorophenyl ether (CAS 5441-16-7)
- Semaglutide impurity 62 (CAS CATO-C4X-222662)
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