3-(4-Chlorophenyl)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one CAS 302953-04-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 302953-04-4 |
| Molecular Formula | C16H8ClF3O3 |
| Molecular Weight | 340.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(4-Chlorophenyl)-7-hydroxy-2-(trifluoromethyl)-4H-chromen-4-one (CAS 302953-04-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H8ClF3O3. Molecular weight: 340.68 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H8ClF3O3 |
| Molecular Weight | 340.68 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
Related Chlorophenyl Standards
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Recommended Standards
- 4-(Cyanomethyl)phenyl 2-chloro-4-(trifluoromethyl)nicotinate (CAS 288246-18-4)
- 2-(8-Chloro-6-(trifluoromethyl)imidazo[1,2-a]pyridin-2-yl)benzoic acid (CAS 900015-43-2)
- 6-Chloro-2-((4-(trifluoromethyl)phenyl)amino)-4H-benzo[d][1,3]oxazin-4-one (CAS 477859-08-8)
- 4-Methoxy-6-(trifluoromethyl)pyridine-2-sulfonyl chloride (CAS 1393583-32-8)
- 2-Phenoxy-1-(7-phenyl-1,4-thiazepan-4-yl)ethan-1-one (CAS 1797892-66-0)
- o1-Tert-butylo4-methyl3-methylpiperidine-1,4-dicarboxylate (CAS 1824505-67-0)
- 2-(1,1-Dioxidotetrahydro-2H-thiopyran-4-yl)acetic acid (CAS 1224869-02-6)
- 2-Amino-3-chlorobenzenethiol (CAS 40925-72-2)
- tert-Butyl 3-(4-(trifluoromethyl)pyridin-2-yl)azetidine-1-carboxylate (CAS 1161829-68-0)
- (Ser(PO?H?)2?2)-Tau Peptide (260-264) PAb Blocking trifluoroacetate salt (CAS 2022956-57-4)
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