4-(1-Hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-7-yl)butanoic acid CAS 1268335-64-3
| CAS No. | 1268335-64-3 |
| Molecular Formula | C11H13BO4 |
| Molecular Weight | 220.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(1-Hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-7-yl)butanoic acid (CAS 1268335-64-3), molecular formula C11H13BO4 and molecular weight 220.03 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-(1-Hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-7-yl)butanoic acid (C11H13BO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 220.03 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H13BO4 |
| Molecular Weight | 220.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Hydroxy Standards
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- Methyl 2-hydroxy-6-(trifluoromethyl)benzoate (CAS 1024605-95-5)
- Methyl 2-hydroxy-2-(2,4,5-trifluorophenyl)acetate (CAS 1036273-10-5)
- 2-(4-Hydroxy-3-(trifluoromethyl)phenyl)acetic acid (CAS 1042703-41-2)
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Recommended Standards
- 4-[1-(Methoxycarbonyl)cyclopropyl]phenylboronic Acid (CAS 1217501-08-0)
- (4-Cyclopropyl-2-(methoxycarbonyl)phenyl)boronic acid (CAS 1395826-22-8)
- (5-Acrylamido-2-(aminomethyl)phenyl)boronic acid (CAS 1217500-77-0)
- (3-Cyclopropyl-4-(methoxycarbonyl)phenyl)boronic acid (CAS 1422975-77-6)
- 1,1,1,2,2,5,5,6,6,6-Decafluoro-3-iodohexane (CAS 1980048-98-3)
- 4-Methyl-2-(piperazin-1-yl)pyrimidine dihydrochloride (CAS 124863-52-1)
- Benzyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 934984-01-7)
- Methyl 2-(4-bromo-2-formylphenoxy)propanoate (CAS 1249671-35-9)
- 4-Cyano-3-(difluoromethyl)-2-fluoropyridine-5-acetonitrile (CAS 1807161-46-1)
- 2-Chloro-3-(chloromethyl)-6-(difluoromethyl)-4-nitropyridine (CAS 1806041-44-0)
- 2-(2-Propyl-1,3-dioxolan-2-yl)acetaldehyde (CAS 125261-00-9)
- Narumicin I (CAS 136005-76-0)
- tert-Butyl (2-hydroxyethyl)(phenyl)carbamate (CAS 121492-10-2)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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