S-Ethyl trifluorothioacetate
- CAS NO.：383-64-2
- Empirical Formula: C4H5F3OS
- Molecular Weight: 158.14
- MDL number: MFCD00000421
- EINECS: 206-852-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:54:55
What is S-Ethyl trifluorothioacetate?
Chemical properties
clear colorless to slightly yellow liquid
The Uses of S-Ethyl trifluorothioacetate
S-Ethyl trifluorothioacetate was used to selectively trifluoroacetylate amino groups in proteins.
What are the applications of Application
S-Ethyl trifluorothioacetate is a trifluoroacetylating agent
Synthesis Reference(s)
Journal of the American Chemical Society, 74, p. 4005, 1952 DOI: 10.1021/ja01136a010
Purification Methods
If IR is free of OH bands then fractionally distil it; otherwise dilute the thio-ester with dry Et2O, wash with 5% KOH and H2O, dry over MgSO4 and fractionate it through an efficient column [Hauptschein et al. J Am Chem Soc 74 4005 1952]. [Beilstein 2 IV 567.] Powerful obnoxious odour.
Properties of S-Ethyl trifluorothioacetate
| Boiling point: | 90.5 °C(lit.) |
| Density | 1.234 g/mL at 25 °C(lit.) |
| refractive index | n |
| Flash point: | 39 °F |
| storage temp. | Store at RT. |
| form | clear liquid |
| color | Colorless to Light yellow |
| BRN | 1761564 |
| CAS DataBase Reference | 383-64-2(CAS DataBase Reference) |
| EPA Substance Registry System | Ethanethioic acid, trifluoro-, S-ethyl ester (383-64-2) |
Safety information for S-Ethyl trifluorothioacetate
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H225:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge. |
Computed Descriptors for S-Ethyl trifluorothioacetate
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