2-[(5,7-Dimethyl-2-oxo-2H-chromen-3-yl)methylene]-1H-indene-1,3(2H)-dione CAS 1020252-45-2
| CAS No. | 1020252-45-2 |
| Molecular Formula | C21H14O4 |
| Molecular Weight | 330.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-[(5,7-Dimethyl-2-oxo-2H-chromen-3-yl)methylene]-1H-indene-1,3(2H)-dione (C21H14O4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-[(5,7-Dimethyl-2-oxo-2H-chromen-3-yl)methylene]-1H-indene-1,3(2H)-dione (CAS 1020252-45-2) is a high-purity analytical reference standard with the molecular formula C21H14O4 and a molecular weight of 330.33 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.
As a certified reference material (CRM), 2-[(5,7-Dimethyl-2-oxo-2H-chromen-3-yl)methylene]-1H-indene-1,3(2H)-dione 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 | C21H14O4 |
| Molecular Weight | 330.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
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Recommended Standards
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- 5137-70-2 Dodecylphosphonic acid Phosphonic acid, dodecyl- Phosphonic acid, P-dodecyl- 4-04-00-03565 (Beilstein Handbook Reference) BRN 1778341 Dodecane phosphonic acid n-Dodecanephosphonic acid 1-Dodecanephosphonic acid n-Dodecyl phosphonic acid n-Dodecylphosphonic acid EINECS 225-897-8 NSC 407872 (CAS 5137-70-2)
- Peptide 433 (CAS CATO-CPTD788433)
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