4-Hydroxy-5-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid CAS 248282-18-0
| CAS No. | 248282-18-0 |
| Molecular Formula | C12H11NO5 |
| Molecular Weight | 249.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Hydroxy-5-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-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.
4-Hydroxy-5-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 248282-18-0), molecular formula C12H11NO5 and molecular weight 249.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Hydroxy-5-methoxy-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (C12H11NO5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 249.22 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H11NO5 |
| Molecular Weight | 249.22 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- (S)-4-Hydroxy-4-methyl-7,8-dihydro-1H-pyrano[3,4-f]indolizine-3,10(4H,6H)-dione (CAS 1332605-57-8)
- (S)-2-(1-Hydroxy-2H-isoindol-2-yl)succinic acid (CAS 650625-14-2)
- 2-(3-Hydroxy-2,5-dioxo-1-phenylpyrrolidin-3-yl)acetic acid (CAS 698984-25-7)
- 4-hydroxy-5,8-dimethoxyquinoline-3-carboxylic acid (CAS 500349-81-5)
- 4-Hydroxy-6,7-dimethoxyquinoline-3-carboxylic Acid (CAS 26893-22-1)
- 4-hydroxy-6,8-dimethoxyquinoline-3-carboxylic acid (CAS 874498-79-0)
- N-(6-Hydroxy-2-methyl-3-nitro-1H-indol-1-yl)acetamide (CAS 773885-83-9)
- {2-hydroxy-3-[2-(trifluoromethyl)phenoxy]propyl}(methyl)amine (CAS 1019477-18-9)
Recommended Standards
- 4-(Benzo[d][1,3]dioxol-5-yl)-2-oxopyrrolidine-3-carboxylic acid (CAS 927802-31-1)
- 4-(5-Nitro-1H-benzo[d]imidazol-2-yl)butanoic acid (CAS 797780-83-7)
- 4-Oxo-4-((3-oxo-1,3-dihydroisobenzofuran-5-yl)amino)butanoic acid (CAS 842954-88-5)
- 4-(1,3-Dioxoisoindolin-2-yl)-2-hydroxybutanoic acid (CAS 40732-91-0)
- (2-Methyl-5-(trifluoromethyl)phenyl)hydrazine (CAS 1388060-78-3)
- Ethyl 2-chloro-2-fluorocyclopropane-1-carboxylate (CAS 155051-93-7)
- Cetrorelix acetate (CAS 145672-81-7)
- 2-Bromo-5-isopropoxybenzotrifluoride (CAS 914635-70-4)
- Boc-DL-6-methoxy-1,2,3,4-tetrahydronorharman-1-carboxylic acid (CAS 1219423-55-8)
- tert-butyl 3-carbamothioylmorpholine-4-carboxylate (CAS 1803583-29-0)
- Butylphthalide Impurity N4 (CAS 168288-19-5)
- 4-Chloro-2-iodo-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1638764-73-4)
- 2-(2-((Isopropyl(methyl)amino)methyl)piperidin-1-yl)acetic acid (CAS 1353982-51-0)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
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