6,7-Dichloro-4-(4-chlorophenyl)-2-(4-fluorophenyl)phthalazin-1(2H)-one CAS 338791-30-3
| CAS No. | 338791-30-3 |
| Molecular Formula | C20H10Cl3FN2O |
| Molecular Weight | 419.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 6,7-Dichloro-4-(4-chlorophenyl)-2-(4-fluorophenyl)phthalazin-1(2H)-one (CAS 338791-30-3), a certified reference material (molecular formula C20H10Cl3FN2O, MW 419.66 g/mol) for analytical method development and quality control.
Based on its molecular formula C20H10Cl3FN2O, 6,7-Dichloro-4-(4-chlorophenyl)-2-(4-fluorophenyl)phthalazin-1(2H)-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 419.66 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H10Cl3FN2O |
| Molecular Weight | 419.66 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 6,7-Dichloro-2-(4-chlorophenyl)-4-(4-fluorophenyl)phthalazin-1(2H)-one (CAS 161716-25-2)
- 2,3-Dichloro-N-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)methyl)benzenesulfonamide (CAS 239112-41-5)
- (2Z)-2,3-Dichloro-3-[(4-chlorophenyl)methanesulfinyl]-N-(6-methoxypyridin-3-yl)prop-2-enamide (CAS 337922-27-7)
- 2,3-dichloro-3-[(2-chlorobenzyl)sulfinyl]-N-(6-methoxy-3-pyridinyl)acrylamide (CAS 337922-38-0)
- 3,4-Dichloro-N-(4,6-diphenylpyrimidin-2-yl)benzamide (CAS 820961-62-4)
- 5,6-Dichloro-2-(2-chloropyridin-3-yl)-1-(4-methoxybenzyl)-1H-benzo[d]imidazole (CAS 338774-36-0)
- 2,4-Dichloro-N-(4-(4-pentylcyclohexyl)phenyl)benzamide (CAS 478041-26-8)
- N-(4-(4,5-dichloro-1H-imidazol-1-yl)phenyl)naphthalene-2-sulfonamide (CAS 1023356-72-0)
Recommended Standards
- 2-Bromo-6-ethoxy-4-formylphenyl 4-chlorobenzenesulfonate (CAS 432006-04-7)
- 4-Chloro-5-iodo-7-(1,4-dioxaspiro[4.5]decan-8-yl)-7h-pyrrolo[2,3-d]pyrimidine (CAS 262444-48-4)
- N-((5-chloro-1,2,3-thiadiazol-4-yl)methoxy)-3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxamide (CAS 338794-73-3)
- 1,25-Dihydroxy Vitamin D3 ,D3 (CAS 128726-16-0)
- 4-(5-(Pyridin-2-yl)-1H-1,2,4-triazol-3-yl)aniline (CAS 1015534-79-8)
- 2,2′-(1-Methylethylidene)bis[4,5-dihydrooxazole] (CAS 165554-94-9)
- 3-(2-Hydroxypyridin-4-yl)benzoic acid (CAS 1261925-28-3)
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- 6-Ethoxy-2-(4-phenylpiperazin-1-yl)benzo[d]thiazole (CAS 863001-03-0)
- Isopropyl 4,4,4-trifluoromethylcrotonate (CAS 188966-82-7)
- 5-Amino-3-isobutylisoxazole-4-carbonitrile (CAS 1520307-53-2)
- Peptide T (CAS 106362-32-7)
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