Methyl 3-((2-chlorobenzyl)oxy)thieno[2,3-b]pyridine-2-carboxylate CAS 338419-37-7
| CAS No. | 338419-37-7 |
| Molecular Formula | C16H12ClNO3S |
| Molecular Weight | 333.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H12ClNO3S, Methyl 3-((2-chlorobenzyl)oxy)thieno[2,3-b]pyridine-2-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.79 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.
Methyl 3-((2-chlorobenzyl)oxy)thieno[2,3-b]pyridine-2-carboxylate (CAS 338419-37-7), molecular formula C16H12ClNO3S and molecular weight 333.79 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C16H12ClNO3S |
| Molecular Weight | 333.79 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 3-((3-chlorobenzyl)oxy)thieno[2,3-b]pyridine-2-carboxylate (CAS 338419-38-8)
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Recommended Standards
- 5-[(Benzenesulfonyl)methyl]-3-(2-chlorophenyl)-1,2-oxazole (CAS 343372-67-8)
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- Methyl 3-[(4-chlorophenyl)methoxy]thieno[2,3-b]pyridine-2-carboxylate (CAS 338419-39-9)
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- Ethyl 6-fluoro-1H-indazole-4-carboxylate (CAS 2122046-25-5)
- [3-31]-Semaglutide D (Sodium salt) (CAS CATO-C4X-2226119)
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