Ethyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate, 97% CAS 1198-44-3
| CAS No. | 1198-44-3 |
| Molecular Formula | C8H12O3S |
| Molecular Weight | 188.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ethyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate, 97% (CAS 1198-44-3) is a high-purity analytical reference standard with the molecular formula C8H12O3S and a molecular weight of 188.24 g/mol.
Structurally, Ethyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate, 97% (C8H12O3S) 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 188.24 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).
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.
Physical & Chemical Properties
| Molecular Formula | C8H12O3S |
| Molecular Weight | 188.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1957 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 5-oxotetrahydro-2H-thiopyran-2-carboxylate (CAS 1924187-25-6)
- Methyl 4-oxotetrahydro-2H-thiopyran-3-carboxylate 1-oxide (CAS 25012-75-3)
- Methyl 3-oxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate (CAS 113089-37-5)
- Ethyl 3-oxotetrahydro-1H-pyrrolizine-7a(5H)-carboxylate (CAS 1822780-51-7)
- 4-Oxotetrahydro-2H-pyran-3-sulfonamide (CAS 1398606-42-2)
- Methyl 3-oxotetrahydro-2H-thiopyran-2-carboxylate (CAS 38555-41-8)
- Ethyl 4-oxotetrahydro-2H-pyran-3-carboxylate, 97% (CAS 141419-94-5)
- Ethyl 3-oxotetrahydro-2H-pyran-4-carboxylate (CAS 388109-26-0)
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