3,3-Dimethyl-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborole CAS 221352-10-9
| CAS No. | 221352-10-9 |
| Molecular Formula | C9H11BO2 |
| Molecular Weight | 161.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,3-Dimethyl-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborole (CAS 221352-10-9), molecular formula C9H11BO2 and molecular weight 161.99 g/mol, is a CATO reference standard with documented purity and traceability.
3,3-Dimethyl-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborole (C9H11BO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C9H11BO2 |
| Molecular Weight | 161.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
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