(3E)-3-[(4-Methylphenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one CAS 61926-45-2
| CAS No. | 61926-45-2 |
| Molecular Formula | C17H14O2 |
| Molecular Weight | 250.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, (3E)-3-[(4-Methylphenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (C17H14O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 250.29 g/mol, it falls into the medium-molecular-weight range. 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).
(3E)-3-[(4-Methylphenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one (CAS 61926-45-2) is a high-purity analytical reference standard with the molecular formula C17H14O2 and a molecular weight of 250.29 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (3E)-3-[(4-Methylphenyl)methylidene]-3,4-dihydro-2H-1-benzopyran-4-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H14O2 |
| Molecular Weight | 250.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1974 |
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