3-Nitroquinoline-4-carboxylic acid CAS 5466-50-2
| CAS No. | 5466-50-2 |
| Molecular Formula | C10H6N2O4 |
| Molecular Weight | 218.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Nitroquinoline-4-carboxylic acid (C10H6N2O4) contains an amino-acid-derived structure, 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. 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).
3-Nitroquinoline-4-carboxylic acid (CAS 5466-50-2), molecular formula C10H6N2O4 and molecular weight 218.17 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 3-Nitroquinoline-4-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H6N2O4 |
| Molecular Weight | 218.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1958 |
| Nitrogen Atoms | 2 |
Related Nitroquinoline Standards
- 5-Nitroquinoline-3-carboxylic acid (CAS 102312-48-1)
- 8-Nitroquinoline-4-carboxylic acid (CAS 121689-22-3)
- 8-Nitroquinoline-2-carboxylic acid (CAS 15733-85-4)
- 8-Nitroquinoline-6-carboxylic acid (CAS 157915-07-6)
- 5-Nitroquinoline-4-carboxylic acid (CAS 157915-10-1)
- 5-Nitroquinoline-2-carboxylic acid (CAS 525-47-3)
- 5-nitroquinoline-8-carboxylic acid (CAS 83848-59-3)
- 6-Nitroquinoline-2-carboxylic acid (CAS 30836-96-5)
Recommended Standards
- 3-Nitrocinnoline-4-carboxamide (CAS 87954-00-5)
- 4-(4-Nitrophenyl)-1,3,5-triazin-2(1H)-one (CAS 61709-08-8)
- 3-(Benzyloxy)-1,1,1-trifluoro-2-propanone (CAS 329065-59-0)
- 4’-(Trifluoromethoxy)propiophenone (CAS 94108-55-1)
- Ethyl 3-((6-bromoquinolin-4-yl)amino)benzoate (CAS 1217078-65-3)
- Ethyl 2-[4-(3-methoxyphenyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetate (CAS 860786-33-0)
- C-[5-(5-TRifluoromethyl-pyridin-2-yl)-[1,2,4]oxadiazol-3-yl]-methylamine hydrochloride (CAS 2108262-95-7)
- n-(1-Methoxypropan-2-yl)aniline (CAS 78923-90-7)
- Ethyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-3-carboxylate (CAS 1015765-44-2)
- 1,1-Dicyano-2-methoxy-4-dimethylamino-1,3-butadiene-13C3 1391062-38-6 (CAS 1391062-38-6)
- 4,7-Difluoro-2-methylbenzofuran-3(2h)-one (CAS 1341453-11-9)
- n-(2-Fluorobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 848334-24-7)
- (3-Amino-4-chlorophenyl)(p-tolyl)methanone (CAS 106841-04-7)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
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