(5,6-Dihydro-2H-pyran-3-yl)boronic acid CAS 1346526-57-5
| CAS No. | 1346526-57-5 |
| Molecular Formula | C5H9BO3 |
| Molecular Weight | 127.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(5,6-Dihydro-2H-pyran-3-yl)boronic acid (C5H9BO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
(5,6-Dihydro-2H-pyran-3-yl)boronic acid (CAS 1346526-57-5), molecular formula C5H9BO3 and molecular weight 127.93 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C5H9BO3 |
| Molecular Weight | 127.93 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.5 |
| CAS Registry Year (est.) | 1991 |
Related Dihydro Standards
- 3,6-Dihydro-2H-pyran-4-boronic Acid (CAS 1002127-60-7)
- (3,4-dihydro-2H-pyran-6-yl)boronic acid (CAS 1094092-19-9)
- 3-Oxo-2,3-dihydro-1H-pyrazole-4-carboxylic acid (CAS 478968-51-3)
- 4-Oxo-4,5-dihydro-1H-imidazole-2-carboxylic acid (CAS 861293-24-5)
- 5-Oxo-4,5-dihydro-1h-pyrazole-3-carboxylic acid (CAS 71173-77-8)
- 5,6-Dihydro-2H-pyran-3-carboxylic acid (CAS 100313-48-2)
- 3,6-dihydro-2H-pyran-2-carboxylic acid (CAS 116233-54-6)
- Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate (CAS 164928-01-2)
Recommended Standards
- Method 300.1 Surrogate Standard (CAS 13425-80-4)
- ((1E,3Z)-5-Hydroxypenta-1,3-dien-1-yl)boronic acid (CAS 299180-01-1)
- (3-Oxocyclopentyl)boronic acid (CAS 1290145-70-8)
- Molybdenum dioxide (CAS 18868-43-4)
- [(3Z)-2-Oxo-1-phenyl-2,3-dihydro-1H-indol-3-ylidene]amino N-(2-methylphenyl)carbamate (CAS 866143-49-9)
- cis-Ethylenediaminemalonatoplatinum(II) (CAS 41666-77-7)
- 5-Bromo-4-methylpyridazin-3-amine (CAS 1638759-55-3)
- 4-((Trifluoromethyl)thio)benzene-1,2-diamine (CAS 370-46-7)
- N,N-Diethyl-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 1353718-28-1)
- 3-((6-Methyl-1H-benzo[d]imidazol-2-yl)amino)propan-1-ol (CAS 302812-86-8)
- N-(Benzo[d][1,3]dioxol-5-yl)-2-(2-oxobenzo[cd]indol-1(2H)-yl)acetamide (CAS 354121-90-7)
- 3-Amino-2-chloro-5-methoxynaphthalene-1,4-dione (CAS 95684-18-7)
- 2-((4-Chlorophenyl)amino)-5-nitrobenzonitrile (CAS 784194-67-8)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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