4-(4-Hydroxybenzylidene)-2-phenyloxazol-5(4H)-one CAS 1226-71-7
| CAS No. | 1226-71-7 |
| Molecular Formula | C10H13F3O5S |
| Molecular Weight | 302.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(4-Hydroxybenzylidene)-2-phenyloxazol-5(4H)-one is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-(4-Hydroxybenzylidene)-2-phenyloxazol-5(4H)-one (CAS 1226-71-7), molecular formula C10H13F3O5S and molecular weight 302.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H13F3O5S, 4-(4-Hydroxybenzylidene)-2-phenyloxazol-5(4H)-one contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 302.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), 4-(4-Hydroxybenzylidene)-2-phenyloxazol-5(4H)-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 | C10H13F3O5S |
| Molecular Weight | 302.27 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Hydroxybenzylidene Standards
- (Z)-2-(4-Hydroxybenzylidene)benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-one (CAS 155099-32-4)
- N'-(2-Hydroxybenzylidene)-2-(4-methoxyphenoxy)acetohydrazide (CAS 328541-24-8)
- 10-(4-Hydroxybenzylidene)anthracen-9(10H)-one (CAS 69544-83-8)
- 4-((2-Hydroxybenzylidene)amino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one (CAS 30957-66-5)
- 301820-48-4 5-(2-Hydroxybenzylidene)-2-mercapto-3-phenyl-3,5-dihydro-4H-imidazol-4-one MFCD28505125 (CAS 301820-48-4)
- N'-(3-Hydroxybenzylidene)-5-(1-methyl-1H-pyrrol-2-yl)-1H-pyrazole-3-carbohydrazide (CAS 303104-83-8)
- (Z)-5-(4-Hydroxybenzylidene)-3-isobutyl-2-thioxothiazolidin-4-one (CAS 1558598-41-6)
- 5-(3-Hydroxybenzylidene)-2-(piperazin-1-yl)thiazol-4(5H)-one (CAS 941897-42-3)
Recommended Standards
- ethyl 2-(trifluoromethylsulfonyloxy)cyclohexene-1-carboxylate (CAS 122135-83-5)
- Ethyl 4-(((trifluoromethyl)sulfonyl)oxy)cyclohex-3-ene-1-carboxylate (CAS 122948-57-6)
- Benzyl (2-(trifluoromethyl)thiazol-4-yl)carbamate (CAS 1202043-89-7)
- 2,2,2-Trifluoroethyl n-(4-phenyl-1,3-thiazol-2-yl)carbamate (CAS 1235438-81-9)
- N4-Benzoyl-2-deoxy-5-O-DMT-cytidine (CAS 67219-55-0)
- 2-(6-Methoxybenzo[d]isoxazol-3-yl)acetic acid (CAS 34200-00-5)
- 6-Chloro-3-methylisoindolin-1-one (CAS 1440519-60-7)
- 1-(2,6-Dichlorophenyl)-3-(2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea (CAS 866008-62-0)
- N-(4-Aminophenyl)-2-propoxybenzamide (CAS 1020054-03-8)
- 1-(2,4-Difluoropyrimidin-5-yl)ethanol (CAS 161123-97-3)
- tert-Butyl 4-hydroxycyclohexanecarboxylate (CAS 220179-93-1)
- 4-(4-(2-(Cyclohex-1-en-1-yl)ethyl)-5-methyl-4H-1,2,4-triazol-3-yl)-1-methyl-1H-pyrazol-5-amine (CAS 956204-39-0)
- 6-(Tert-butylamino)picolinimidamide hydrochloride (CAS 1432681-69-0)
- Insulin B (22-25) (CAS 34367-73-2)
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