(3-bromo-5-methyl-2-thienyl)boronic acid CAS 1351859-39-6
| CAS No. | 1351859-39-6 |
| Molecular Formula | C5H6BBrO2S |
| Molecular Weight | 220.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3-bromo-5-methyl-2-thienyl)boronic acid (CAS 1351859-39-6) is a high-purity analytical reference standard with the molecular formula C5H6BBrO2S and a molecular weight of 220.88 g/mol.
(3-bromo-5-methyl-2-thienyl)boronic acid (C5H6BBrO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures (3-bromo-5-methyl-2-thienyl)boronic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H6BBrO2S |
| Molecular Weight | 220.88 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.5 |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related bromo Standards
- (5-bromo-4-methyl-2-thienyl)boronic acid (CAS 1217501-16-0)
- (4-bromo-2-methylphenyl)boronic acid (CAS 221006-71-9)
- Methyl 2-Bromo-3,3,3-trifluoropropionate (CAS 113816-36-7)
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- 3-Bromo-5-fluoro-2-nitropyridine (CAS 1258544-91-0)
- 4-Bromo-2-fluoro-5-nitropyridine (CAS 1335114-94-7)
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- 6-Bromo-2-fluoro-3-nitropyridine (CAS 1417333-87-9)
Recommended Standards
- Trifluoroacetic acid, silver salt Silver mono(trifluoroacetate) Silver perfluoroacetate Silver trifluoroacetate Silver(1+) 2,2,2-trifluoroacetate Silver(1+) trifluoroacetate Silver(I) trifluoroacetate Siver(I) trifluoroacetate Trifluoroacetic acid silver(1+) salt 2966-50-9 (CAS 2966-50-9)
- 3,5-Dichloro-2-methoxyphenylboronic acid (CAS 2573074-25-4)
- (Bromomethyl)boronic Acid Pinacol Ester (CAS 166330-03-6)
- 2,6-Dichloro-4-(hydroxymethyl)phenylboronic acid (CAS 2121514-53-0)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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