| CAS No. | 4347-33-5 |
| Molecular Formula | C5H9BO3S |
| Molecular Weight | 160.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of 5-Formylthiophene-2-boronic acid 5-formylthiophen-2-boronic acid 5-formyl-2-thiopheneboronic acid 2-formylthiophene-5-boronic acid 2-formyl thiophene-5-boronic acid 5-formylthienyl-2-boronic acid 5-formylthiophen-1-boronic acid 5-formylthien-2-ylboronic acid 5-carbaldehyde-2-thiophenboronic acid 5-Formyl-2-thienylboronic acid 4347-33-5 is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Formylthiophene-2-boronic acid 5-formylthiophen-2-boronic acid 5-formyl-2-thiopheneboronic acid 2-formylthiophene-5-boronic acid 2-formyl thiophene-5-boronic acid 5-formylthienyl-2-boronic acid 5-formylthiophen-1-boronic acid 5-formylthien-2-ylboronic acid 5-carbaldehyde-2-thiophenboronic acid 5-Formyl-2-thienylboronic acid 4347-33-5 (CAS 4347-33-5), molecular formula C5H9BO3S and molecular weight 160.00 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H9BO3S, 5-Formylthiophene-2-boronic acid 5-formylthiophen-2-boronic acid 5-formyl-2-thiopheneboronic acid 2-formylthiophene-5-boronic acid 2-formyl thiophene-5-boronic acid 5-formylthienyl-2-boronic acid 5-formylthiophen-1-boronic acid 5-formylthien-2-ylboronic acid 5-carbaldehyde-2-thiophenboronic acid 5-Formyl-2-thienylboronic acid 4347-33-5 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 160.00 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
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.
| Molecular Formula | C5H9BO3S |
| Molecular Weight | 160.00 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.) | 1958 |
| Sulfur Atoms | 1 |