5-(2-Fluorophenyl)-2-((2-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one CAS 1956331-58-0
| CAS No. | 1956331-58-0 |
| Molecular Formula | C18H9F2NO3 |
| Molecular Weight | 325.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-(2-Fluorophenyl)-2-((2-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-(2-Fluorophenyl)-2-((2-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one (CAS 1956331-58-0), a certified reference material (molecular formula C18H9F2NO3, MW 325.27 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H9F2NO3, 5-(2-Fluorophenyl)-2-((2-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 325.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-(2-Fluorophenyl)-2-((2-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-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.
Physical & Chemical Properties
| Molecular Formula | C18H9F2NO3 |
| Molecular Weight | 325.27 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluorophenyl Standards
- 5-(3-Fluorophenyl)-2-((3-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one (CAS 1956376-36-5)
- 5-(4-Fluorophenyl)-2-((4-fluorophenyl)ethynyl)-4-hydroxy-6H-1,3-oxazin-6-one (CAS 1956376-41-2)
- 9-(4-Fluorophenyl)-6,9-dihydro-[1,3]dioxolo[4,5-g]furo[3,4-b]quinolin-8(5H)-one (CAS 861208-09-5)
- [Acetyl-[4-(4-Fluorophenyl)Phenyl]Amino] Hydrogen Sulfate (CAS 132884-69-6)
- 7-(4-Fluorophenyl)-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1245807-65-1)
- 5-(4-Fluorophenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 310451-82-2)
- 5-(4-Fluorophenyl)-7-(trifluoromethyl)pyrazolo-[1,5-a]pyrimidine-3-carboxylic acid (CAS 310451-83-3)
- Benzyl 2-(4-fluorophenyl)-4-oxo-3,4-dihydropyridine-1(2H)-carboxylate (CAS 414910-19-3)
Recommended Standards
- 2-{[(3,4-dichlorophenyl)methyl]sulfanyl}-4,5-dimethyl-1-(prop-2-yn-1-yl)-1H-imidazole 338965-97-2 6K-564S (CAS 338965-97-2)
- Benzyl (S)-4-(trifluoromethyl)-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide (CAS 2920746-96-7)
- 4-Chloro-2-{[(4-chlorophenyl)methyl]sulfanyl}-5,6,7,8-tetrahydroquinazoline (CAS 338776-91-3)
- (2S,4S,5R,6R)-2,4-Dihydroxy-5-(2-hydroxyacetamido)-6-((1R,2R)-1,2,3-trihydroxypropyl)tetrahydro-2H-pyran-2-carboxylic acid (CAS 885329-49-7)
- 2-Ethynyl-1-fluoro-3-methoxybenzene (CAS 1491067-02-7)
- 2-Bromo-4-fluoro-3-(trifluoromethyl)pyridine (CAS 1227599-75-8)
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- 4-(Imidazo[1,2-a]pyrimidin-2-yl)benzonitrile (CAS 104691-51-2)
- 2,2-Difluorononanoic acid (CAS 2357478-72-7)
- Folic Acid Impurity 72 (CAS CATO-C4X-139572)
- Peptide Impurity 09 X TFA Salt (CAS CATO-CPTD788809)
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