Ethyl 4-((1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-5-yl)oxy)benzoate CAS 1187187-14-9
| CAS No. | 1187187-14-9 |
| Molecular Formula | C16H15BO5 |
| Molecular Weight | 298.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 4-((1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-5-yl)oxy)benzoate (CAS 1187187-14-9), molecular formula C16H15BO5 and molecular weight 298.10 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Ethyl 4-((1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-5-yl)oxy)benzoate (C16H15BO5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. 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 | C16H15BO5 |
| Molecular Weight | 298.10 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 |
| Degree of Unsaturation (DBE) | 9.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
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Recommended Standards
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- Dalilesen impurity 46 (CAS CATO-C4X-301046)
- 1,3-Dichlorotetrafluorobenzene (CAS 1198-61-4)
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- trans-4-[Bis(phenylmethyl)amino]cyclohexanemethanol (CAS 219770-58-8)
- Methyl 2-(3-(3-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-1-yl)acetate (CAS 1416342-42-1)
- N,N-dimethyl-2-(4-phenoxyphenyl)ethanethioamide (CAS 320424-64-4)
- 5-Chloro-2-hydroxy-3-methoxybenzaldehyde 7740-05-8 AZ0001-0565 MFCD01103568 (CAS 7740-05-8)
- 4-(Cyclohexylmethyl)pyridin-3-ol (CAS 1243463-10-6)
- 1-Methyl-4-(phenylmethyl)piperazine (CAS 62226-74-8)
- Ulipristal Impurity 26 (CAS 14340-01-3)
- Trifluoro(3-(methoxycarbonyl)bicyclo[1.1.1]pentan-1-yl)borate (CAS 2410559-73-6)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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