Methyl 2-methyl-4-oxotetrahydrothiophene-3-carboxylate CAS 65369-27-9
| CAS No. | 65369-27-9 |
| Molecular Formula | C7H10O3S |
| Molecular Weight | 174.22 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.
CATO supplies Methyl 2-methyl-4-oxotetrahydrothiophene-3-carboxylate (CAS 65369-27-9), a certified reference material (molecular formula C7H10O3S, MW 174.22 g/mol) for analytical method development and quality control.
Structurally, Methyl 2-methyl-4-oxotetrahydrothiophene-3-carboxylate (C7H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 174.22 g/mol, it falls into the medium-molecular-weight range. 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).
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 | C7H10O3S |
| Molecular Weight | 174.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1975 |
| Sulfur Atoms | 1 |
Recommended Standards
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- imidazo[4,3-b][1,3]thiazole-5-carboxylic acid (CAS 268551-89-9)
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- 2-(Difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-4-acetonitrile (CAS 1804477-96-0)
- methyl 2-azido-3-[2-methoxy-4-(trifluoromethyl)phenyl]prop-2-enoate (CAS 2755783-54-9)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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