thieno[2,3-b]pyridine-2-carboxylic acid CAS 59944-76-2
| CAS No. | 59944-76-2 |
| Molecular Formula | C8H13NO2S |
| Molecular Weight | 187.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 187.26 g/mol gives thieno[2,3-b]pyridine-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies thieno[2,3-b]pyridine-2-carboxylic acid (CAS 59944-76-2), a certified reference material (molecular formula C8H13NO2S, MW 187.26 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H13NO2S, thieno[2,3-b]pyridine-2-carboxylic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 187.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 thieno[2,3-b]pyridine-2-carboxylic 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 | C8H13NO2S |
| Molecular Weight | 187.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related thieno Standards
- thieno[3,2-c]pyridine-4-carboxylic acid (CAS 1140239-91-3)
- thieno[2,3-b]pyridine-5-carboxylic acid (CAS 117390-38-2)
- thieno[3,2-b]pyridine-6-carboxylic acid (CAS 117390-39-3)
- thieno[3,2-b]pyridine-7-carboxylic acid (CAS 1416714-01-6)
- thieno[2,3-b]pyridine-3-carboxylic acid (CAS 1501727-62-3)
- thieno[2,3-c]pyridine-2-carboxylic acid (CAS 478149-00-7)
- thieno[2,3-c]pyridine-7-carboxylic acid (CAS 852532-64-0)
- thieno[3,2-b]pyridine-2-carboxylic acid (CAS 347187-30-8)
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