4-(4-Fluorophenyl)phthalazin-1(2H)-one CAS 1766-63-8
| CAS No. | 1766-63-8 |
| Molecular Formula | C14H9FN2O |
| Molecular Weight | 240.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-(4-Fluorophenyl)phthalazin-1(2H)-one 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-(4-Fluorophenyl)phthalazin-1(2H)-one (CAS 1766-63-8), molecular formula C14H9FN2O and molecular weight 240.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 4-(4-Fluorophenyl)phthalazin-1(2H)-one is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 240.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C14H9FN2O |
| Molecular Weight | 240.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluorophenyl Standards
- 2-(3-FLUOROPHENYL)-3-OXO-3-(PYRIDIN-3-YL)PROPANENITRILE (CAS 1096975-24-4)
- 2-(2-Fluorophenyl)quinazolin-4(1H)-one (CAS 138867-16-0)
- 2-(3-Fluorophenyl)quinazolin-4(3H)-one (CAS 138867-17-1)
- 6-(2-(4-Fluorophenyl)-2-oxoethyl)nicotinonitrile (CAS 145835-09-2)
- 3-(4-Fluorophenyl)-3-oxo-2-(4-pyridinyl)propanenitrile (CAS 148671-42-5)
- 2-(4-Fluorophenyl)-5-phenyl-1,3,4-oxadiazole (CAS 1580-50-3)
- 2-(4-Fluorophenyl)phthalazin-1(2h)-one (CAS 161716-49-0)
- 2-(4-Fluorophenyl)quinazolin-4(1H)-one (CAS 190838-76-7)
Recommended Standards
- 2-(2,4-Difluorophenyl)thiazole-4-carboxamide (CAS 175276-97-8)
- 8-Fluoro-2-phenylquinazolin-4(3H)-one (CAS 1791433-96-9)
- (6-Fluoroimidazo[1,2-a]pyridin-3-yl)(phenyl)methanone (CAS 1634647-80-5)
- 4-(4-ethoxy-3-fluorophenyl)-4-oxobutanoic acid (CAS 1797723-62-6)
- Methyl 5-hydroxybenzo[d]oxazole-2-carboxylate (CAS 1806320-78-4)
- Spiro[benzo[d][1,3]oxazine-2,1'-cyclohexan]-4(1H)-one (CAS 96447-10-8)
- Methyl 7-hydroxyheptanoate (CAS 14565-11-8)
- Ethylenediaminetetraacetic acid calcium disodium salt hydrate 98% (CAS 304695-78-1)
- 4,6-Dimethyl-3-((3-(trifluoromethyl)phenyl)sulfonyl)pyridin-2(1H)-one (CAS 861212-06-8)
- 1-(4-(3-Fluoropropoxy)benzyl)-4-phenylpiperazine (CAS 477870-97-6)
- Boceprevir Impurity 2 (CAS CATO-C4X-25252)
- Ethyl 3-(4-(tert-butoxycarbonyl)-1,4-diazepan-1-yl)quinoxaline-2-carboxylate (CAS 1858255-49-8)
- Ethyl 4-hydroxy-2-oxo-2,5-dihydro-3-furancarboxylate (CAS 21053-90-7)
- Mast Cell Degranulating Peptide HR-1 (CAS 80533-94-4)
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