Dimethyl 3,3'-Thiodipropionate CAS 4131-74-2
| CAS No. | 4131-74-2 |
| Molecular Formula | C8H14O4S |
| Molecular Weight | 206.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Dimethyl 3,3'-Thiodipropionate (CAS 4131-74-2), molecular formula C8H14O4S and molecular weight 206.26 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Dimethyl 3,3'-Thiodipropionate (C8H14O4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 206.26 g/mol, it falls into the medium-molecular-weight range.
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 | C8H14O4S |
| Molecular Weight | 206.26 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
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- 1-methyl-6-(tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-indol-2-one (CAS 1428666-17-4)
- Crisaborole Impurity 1 (CAS 20035-32-9)
- 5-Chloro-3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carbaldehyde (CAS 660845-30-7)
- Liraglutide Impurity 17 TFA Salt (CAS CATO-C4X-199217)
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