Thiobis(ethane-2,1-diyl) distearate CAS 4275-32-5
| CAS No. | 4275-32-5 |
| Molecular Formula | C40H78O4S |
| Molecular Weight | 655.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Thiobis(ethane-2,1-diyl) distearate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Thiobis(ethane-2,1-diyl) distearate (CAS 4275-32-5), molecular formula C40H78O4S and molecular weight 655.11 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, Thiobis(ethane-2,1-diyl) distearate is typically white to off-white amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 655.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C40H78O4S |
| Molecular Weight | 655.11 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Thiobis Standards
- (Z)-Thiobis(ethane-2,1-diyl) dioleate (CAS 65808-58-4)
- Thiobis(4,1-phenylene) Bis(2,4-dichlorobenzoate) (CAS 1363166-13-5)
- 3,3'-((Thiobis(4,1-phenylene))bis(sulfanediyl))bis(1-(p-tolyl)propan-1-one) (CAS 882748-82-5)
- 3,3'-((Thiobis(4,1-phenylene))bis(sulfanediyl))bis(1-(thiophen-2-yl)propan-1-one) (CAS 868256-41-1)
- 3,3-[Thiobis(2,1-phenylene-2,1-diazenediyl)]bis[6-hydroxybenzoic Acid (CAS 72245-48-8)
- 5,5'-((Thiobis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) (CAS 52256-85-6)
- 2,2'-(thiobis(2-hydroxy-5,1-phenylene))bis(4H-benzo[e][1,3]oxazin-4-one) (CAS 1688656-86-1)
- Thiobis(ethane-2,1-diyl) didodecanoate (CAS 4275-31-4)
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