5-(Methylthio)pyridine-3-boronic acid pinacol ester CAS 1171891-40-9
| CAS No. | 1171891-40-9 |
| Molecular Formula | C12H18BNO2S |
| Molecular Weight | 251.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(Methylthio)pyridine-3-boronic acid pinacol ester (CAS 1171891-40-9) is a high-purity analytical reference standard with the molecular formula C12H18BNO2S and a molecular weight of 251.15 g/mol.
Based on its molecular formula C12H18BNO2S, 5-(Methylthio)pyridine-3-boronic acid pinacol ester contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 251.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 5-(Methylthio)pyridine-3-boronic acid pinacol ester 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 | C12H18BNO2S |
| Molecular Weight | 251.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Cyclopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 1245524-04-2)
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- 2-Cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 1283179-55-4)
- 4-bromo-5-fluoro-naphthalen-2-ol (CAS 2621936-14-7)
- 8-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)-1-oxa-4-thia-8-azaspiro[4.5]decane (CAS 1351644-18-2)
- 2-(3-Hydroxypyrrolidin-1-yl)isonicotinonitrile (CAS 1261234-97-2)
- 5-Chlorothieno[2,3-d][1,2,3]thiadiazole-6-carboxylic acid (CAS 192878-32-3)
- 3-Methyl-5-phenyl-1H-pyrazole-4-carboxylic acid (CAS 54952-71-5)
- 4,4''-Dimethoxy-[1,1':4',1''-terphenyl]-2',3'-diamine (CAS 867349-80-2)
- N-(1,3-Benzothiazol-2-yl)-1-phenylcyclopentane-1-carboxamide (CAS 1024278-14-5)
- 4,4,4-Trifluoro-2-(m-tolyl)butanoic acid (CAS 1531924-99-8)
- 3-Fluoro-5-(methylthio)phenol (CAS 1243456-31-6)
- N-(3,5-Bis(trifluoromethyl)phenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 577766-17-7)
- D-Ile17-Tirzepatide (CAS CATO-CPTD788917)
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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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com