1-Ethyl-4-oxo-7-(pyrrolidin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid CAS 89353-40-2
| CAS No. | 89353-40-2 |
| Molecular Formula | C16H18N2O3 |
| Molecular Weight | 286.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Ethyl-4-oxo-7-(pyrrolidin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (CAS 89353-40-2) is a high-purity analytical reference standard with the molecular formula C16H18N2O3 and a molecular weight of 286.33 g/mol.
The molecular framework of 1-Ethyl-4-oxo-7-(pyrrolidin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (C16H18N2O3) is characterized by a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C16H18N2O3 |
| Molecular Weight | 286.33 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-Benzyl-2-oxo-5-phenyl-1,2-dihydropyridine-3-carbonitrile (CAS 338954-56-6)
- 2-(((2-Morpholinoethyl)amino)methylene)-1H-indene-1,3(2H)-dione (CAS 59904-30-2)
- 1-[4-(6-hydroxyhex-1-ynyl)phenyl]hexahydropyrimidine-2,4-dione (CAS 2904664-77-1)
- 2-(((4-Methoxyphenyl)amino)methyl)-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione (CAS 93019-69-3)
- 1-(Pyrrolidin-3-yl)pyrrolidin-3-ol dihydrochloride (CAS 1220038-15-2)
- 3-O-tert-Butyldimethylsilyl Calcifediol (CAS 140710-90-3)
- Fatty Acid Methyl Esters Mix 9 (CAS CATO-MCFD201494-HE)
- Ethyl (1R,3R)-1-((tert-butoxycarbonyl)amino)-3-hydroxycyclopentane-1-carboxylate (CAS 207729-08-6)
- tert-Butyl N-{2-[(4-cyanobenzene)amido]phenyl}carbamate (CAS 1864015-98-4)
- 3,5-Dihydroxy-N-(4-hydroxyphenyl)benzamide (CAS 926294-00-0)
- tert-Butyl ((3S,4R)-4-fluoropiperidin-3-yl)carbamate (CAS 1523530-35-9)
- N-Benzyl-4-bromo-3-methylbenzamide (CAS 1020252-76-9)
- 5-Bromo-6-(3-fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 1707373-11-2)
- Lixisenatide (CAS 320367-13-3（free base）)
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