1-Ethyl-6,8-difluoro-7-(4-hydroxyphenyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid CAS 103978-08-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 103978-08-1 |
| Molecular Formula | C18H13F2NO4 |
| Molecular Weight | 345.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 1-Ethyl-6,8-difluoro-7-(4-hydroxyphenyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 103978-08-1), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C18H13F2NO4. Molecular weight: 345.30 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C18H13F2NO4 |
| Molecular Weight | 345.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 2,2-Difluoro-N-(4-methylphenyl)-2-[3-(trifluoromethyl)phenoxy]acetamide (CAS 338792-11-3)
- 2,2-Difluoro-2-(1,1,2,2-tetrafluoro-2-(perfluoroethoxy)ethoxy)acetic acid (CAS 80153-82-8)
- trans-2,3-Difluoro-4-methoxy-4′-(4-propylcyclohexyl)-1,1′-biphenyl (CAS 1002127-48-1)
- 2,5-Difluoro-4-benzyloxyphenylboronic acid pinacol ester (CAS 2121514-83-6)
- 2,6-difluoro-3-nitro-N-[4-(trifluoromethyl)phenyl]benzamide (CAS 260554-66-3)
- 3,4-Difluoro-2-iodobenzophenone (CAS 951891-68-2)
- 3,5-Difluoro-3-iodobenzophenone (CAS 951891-83-1)
- 3,3′-Difluoro-5,5′-bis(trimethylsilyl)-2,2′-bithiophene (CAS 1619967-07-5)
Recommended Standards
- N-(tert-Butyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-sulfonamide (CAS 951233-59-3)
- N'-(6-(trifluoromethyl)nicotinoyl)benzenesulfonohydrazide (CAS 1092346-06-9)
- Ethyl 4-amino-5-(3-fluoro-4-nitrophenyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxylate (CAS 871554-40-4)
- 2-(Carboxy(hydroxy)methyl)-6-hydroxybenzo[d]oxazole (CAS 1804037-94-2)
- 1,4-Bis(2-nitrophenyl)piperazine (CAS 16264-16-7)
- N-(Chloroacetyl)2-phenetidine (CAS 21118-77-4)
- tert-butyl N-[(1-formylcyclopropyl)sulfonyl]carbamate (CAS 1108658-38-3)
- N,n-dimethylnonylaminen-oxide (CAS 2536-13-2)
- 3-Fluoro-4-(4-formylphenoxy)benzamide (CAS 676494-56-7)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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 13829788188 / jacky.chen@cato-chem.com