690681-33-5 [(4-Ethyl-7-methyl-2-oxo-2H-1-benzopyran-5-yl)oxy]acetic acid DTXSID80359048 CAS 690681-33-5
| CAS No. | 690681-33-5 |
| Molecular Formula | C14H14O5 |
| Molecular Weight | 262.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 690681-33-5 [(4-Ethyl-7-methyl-2-oxo-2H-1-benzopyran-5-yl)oxy]acetic acid DTXSID80359048 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
690681-33-5 [(4-Ethyl-7-methyl-2-oxo-2H-1-benzopyran-5-yl)oxy]acetic acid DTXSID80359048 (CAS 690681-33-5), molecular formula C14H14O5 and molecular weight 262.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 690681-33-5 [(4-Ethyl-7-methyl-2-oxo-2H-1-benzopyran-5-yl)oxy]acetic acid DTXSID80359048 (C14H14O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C14H14O5 |
| Molecular Weight | 262.26 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
Recommended Standards
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- 2946AF 6-(2-Fluorophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylic acid 912770-16-2 C12H7FN2O2S (CAS 912770-16-2)
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- Cycloundecanamine (CAS 36413-76-0)
- 1-(4-Aminopiperidin-1-yl)-2-methylpropan-2-ol (CAS 1114856-12-0)
- 3-(4-(2,6-Diisopropylphenyl)-5-mercapto-4h-1,2,4-triazol-3-yl)-n,n-diethylbenzenesulfonamide (CAS 519150-25-5)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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