(3-Methyl-4-(methylthio)phenyl)boronic acid CAS 221031-07-8
| CAS No. | 221031-07-8 |
| Molecular Formula | C8H11BO2S |
| Molecular Weight | 182.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(3-Methyl-4-(methylthio)phenyl)boronic acid (CAS 221031-07-8), molecular formula C8H11BO2S and molecular weight 182.05 g/mol, is a CATO reference standard with documented purity and traceability.
(3-Methyl-4-(methylthio)phenyl)boronic acid (C8H11BO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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).
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-Methyl-4-(methylthio)phenyl)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 | C8H11BO2S |
| Molecular Weight | 182.05 g/mol |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2020 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- (5-Methyl-2-(methylthio)phenyl)boronic acid (CAS 1259443-48-5)
- 4-Methyl-2-(methylthio)phenylboronic acid (CAS 1451392-51-0)
- (2-((Methylthio)methyl)phenyl)boronic acid (CAS 201346-84-1)
- (2-Methyl-4-(methylthio)phenyl)boronic acid (CAS 444722-03-6)
- (2-Methyl-6-(methylthio)phenyl)boronic acid (CAS 2446483-49-2)
- 4-(Methylthio)-1H-pyrazolo[3,4-d]pyrimidin-6-ol (CAS 100047-41-4)
- 2-(Methylthio)-9H-purin-6-ol (CAS 5446-89-9)
- 2-(Methylthio)Pyrazolo[1,5-A][1,3,5]Triazin-4(3H)-One (CAS 54346-18-8)
Recommended Standards
- (4-Cyclobutylthiophen-2-yl)boronic acid (CAS 2225172-33-6)
- (5-Cyclobutylthiophen-2-yl)boronic acid (CAS 2225178-93-6)
- 2-(4-Methylthiophen-2-yl)-1,3,2-dioxaborinane (CAS 885622-95-7)
- 3,3-dichloroazepan-2-one (CAS 1709-14-4)
- 2-(6-Chloro-5-hydroxypyridin-3-yl)acetic acid (CAS 1807270-82-1)
- Methyl 4-Chloro-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylate (CAS 1207518-63-5)
- 5-Amino-2,4-dimethyl-benzenesulfonyl fluoride (CAS 527-81-1)
- 2-Bromo-4-Chloropyridin-3-Ol (CAS 1211583-11-7)
- tert-Butyl (5-bromo-6-chloro-3-nitropyridin-2-yl)carbamate (CAS 2680741-05-1)
- 5,6,7,8-Tetrahydroimidazo[1,2-a]pyridine-8-carboxamide (CAS 185797-36-8)
- [1,1'-Biphenyl]-4-yl 4-methylbenzenesulfonate (CAS 76996-40-2)
- N-(2-Chlorobenzyl)-5-phenyl-7-(p-tolyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 477233-00-4)
- 2-(Difluoromethyl)pyridine-5-carbonyl chloride (CAS 1805251-97-1)
- Semaglutide Impurity 183 (CAS 159541-28-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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