5,7-Difluoro-4-hydroxyquinoline-3-carboxylic acid CAS 228728-18-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 228728-18-5 |
| Molecular Formula | C10H5F2NO3 |
| Molecular Weight | 225.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,7-Difluoro-4-hydroxyquinoline-3-carboxylic acid (CAS 228728-18-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C10H5F2NO3. Molecular weight: 225.15 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C10H5F2NO3 |
| Molecular Weight | 225.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2022 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Difluoro Standards
- 6,8-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 101830-82-4)
- 7,8-Difluoro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (CAS 1125702-49-9)
- 6,8-DIfluoro-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 1267474-18-9)
- 6,7-Difluoro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (CAS 1269531-40-9)
- 6,7-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 144216-11-5)
- 5,7-Difluoro-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 1592590-69-6)
- 5,7-Difluoro-4-hydroxyquinoline-3-carboxylic acid (CAS 185804-34-6)
- 5,8-Difluoro-4-hydroxyquinoline-3-carboxylic acid (CAS 223690-44-6)
Recommended Standards
- 5-(Methoxycarbonyl)-2-nitrobenzoic Acid (CAS 76143-33-4)
- 5-(3,5-Difluorophenyl)isoxazole-3-carboxylic Acid (CAS 885958-97-4)
- 5,8-Difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 797052-45-0)
- 3,4-Difluoro-2-ethoxyphenol (CAS 2271443-09-3)
- (Cyclobutanecarbonyl)valine (CAS 1102900-71-9)
- (4-Fluorophenyl)(1-(nitro(phenylsulfonyl)methyl)-3,4-dihydroisoquinolin-2(1H)-yl)methanone (CAS 339106-06-8)
- 5-Methyl-2-[(1-phenyl-2-pyrrolidinylidene)amino]benzoic Acid Methyl Ester 856925-73-0 Methyl 5-Methyl-2-[(1-phenylpyrrolidene)amino]benzoate (CAS 856925-73-0)
- 4’-Bromo-3’-chloro-2’-hydroxyacetophenone (CAS 1111084-94-6)
- (S)-2-Acetamido-4,4-dimethylpentanoic acid (CAS 112674-65-4)
- Semaglutide impurity 34 (CAS CATO-C4X-222634)
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