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Trifluoro-thioacetic acid S-((3aR,4R,5R,7R,7aR)-4-benzenesulfinyl-2,2,3a,7-tetramethyl-hexahydro-benzo[1,3]dioxol-5-yl) ester is a complex organic compound with the molecular formula C18H21F3O5S. It is a derivative of trifluoro-thioacetic acid, featuring a benzene ring with a sulfinyl group attached to the 4-position, and a hexahydro-benzo[1,3]dioxol-5-yl group at the 2-position. Trifluoro-thioacetic acid S-((3aR,4R,5R,7R,7aR)-4-benzenesulfinyl-2,2,3a,7-tetramethyl-hexahydro-benzo[1,3]dioxol-5-yl) ester is characterized by its chiral center at the 3a, 4, 5, 7, and 7a positions, with the R configuration at each of these centers. It is a potentially valuable intermediate in the synthesis of various pharmaceuticals and agrochemicals due to its unique structure and reactivity.

81939-90-4

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81939-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81939-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,3 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81939-90:
(7*8)+(6*1)+(5*9)+(4*3)+(3*9)+(2*9)+(1*0)=164
164 % 10 = 4
So 81939-90-4 is a valid CAS Registry Number.

81939-90-4Relevant academic research and scientific papers

Cytochalasin Support Studies. The C14-C19 Subunit of Cytochalasin C. Intramolecular 2 + 2 Photochemical Cycloaddition of Vinyl Sulfones

Musser, Arlene K.,Fuchs, P. L.

, p. 3121 - 3131 (2007/10/02)

An intramolecular 2? + 2? photochemical cycloaddition between a six-membered ring vinyl sulfone and a five-membered ring vinylogous ester is described.The process occurs with moderate regiospecificity, the direction being controlled by a cis-acetonide moiety on the six-membered ring.Attempts to fragment the β-alkoxy sulfone adduct to trigger a DeMayo ring expansion were unsuccessful.

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