4-(Benzo[d][1,3]dioxol-5-ylmethylene)-3-phenylisoxazol-5(4H)-one CAS 6948-18-1
| CAS No. | 6948-18-1 |
| Molecular Formula | C20H20N6O4 |
| Molecular Weight | 408.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(Benzo[d][1,3]dioxol-5-ylmethylene)-3-phenylisoxazol-5(4H)-one (CAS 6948-18-1) is a high-purity analytical reference standard with the molecular formula C20H20N6O4 and a molecular weight of 408.41 g/mol.
Structurally, 4-(Benzo[d][1,3]dioxol-5-ylmethylene)-3-phenylisoxazol-5(4H)-one (C20H20N6O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 408.41 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H20N6O4 |
| Molecular Weight | 408.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 6 |
Related Benzo Standards
- 1-(2-(1H-Benzo[d]imidazol-2-yl)phenyl)-4-(4-methoxybenzylidene)-2-methyl-1H-imidazol-5(4H)-one (CAS 90660-80-3)
- 4-((4-(Benzo[d][1,3]dioxol-5-ylmethyl)piperazin-1-yl)methyl)-7-hydroxy-8-methyl-2H-chromen-2-one (CAS 848182-60-5)
- N-(benzo[d][1,3]dioxol-5-yl)-3-(4-ethylphenyl)-3-(2,2,2-trifluoroacetamido)propanamide (CAS 439107-54-7)
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- N-(Benzo[d]thiazol-2-yl)-2-((7-phenyl-6,7-dihydro-5H-imidazo[2,1-c][1,2,4]triazol-3-yl)thio)acetamide (CAS 921557-36-0)
- 4-(Benzo[d][1,3]dioxol-5-ylmethyl)-N-(3,4-dichlorophenyl)piperazine-1-carboxamide (CAS 327974-99-2)
- 4-(Benzo[d][1,3]dioxol-5-ylmethyl)-N-(3,5-dichlorophenyl)piperazine-1-carboxamide (CAS 305859-50-1)
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Recommended Standards
- 4-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-2-methylphenyl acetate (CAS 301206-02-0)
- 5-((6-Amino-3-methyl-2,4-dioxo-1-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)carbamoyl)-2-methylphenyl acetate (CAS 301206-04-2)
- 3-(4-Ethylphenyl)-N-(4-methoxybenzyl)-3-(2,2,2-trifluoroacetamido)propanamide (CAS 439107-53-6)
- 5-Methyl-N-(2-morpholinophenyl)-1-(4-nitrophenyl)-1H-1,2,4-triazole-3-carboxamide (CAS 400078-02-6)
- (S)-Piperidine-2-carboxylic acid hydrochloride (CAS 2133-33-7)
- 4-hydroxyquinazoline-6-carbaldehyde (CAS 1121529-15-4)
- 5,5’-Bis(diphenylphosphino)-4,4’-bi-1,3-benzodioxole (CAS 244261-75-4)
- 3-((4-Ethylcyclohexyl)amino)propan-1-ol (CAS 1042551-60-9)
- 1-Methyl-1H-benzo[d][1,2,3]triazole-7-carboxylic acid (CAS 1312556-57-2)
- Sinensal (CAS 3779-62-2)
- 4-(Difluoromethyl)-2-(trifluoromethyl)thiazole (CAS 1864985-41-0)
- 5-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5-methyl-2,4-imidazolidinedione (CAS 301301-43-9)
- 6,8-Dimethyl-2-(pyridin-2-yl)quinoline-4-carboxylic acid (CAS 725705-56-6)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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