7802. Propanethial S-Oxide
Nomenclature
CAS number: 32157-29-2;
70565-74-1
((Z)-form)
thiopropanal S-oxide; thiopropionaldehyde S-oxide. C3H6OS; mol wt 90.14.
C 39.97%, H 6.71%, O 17.75%, S 35.57%.
Description and references
Lachrymatory factor of the onion, Allium cepa L., found as a 95% (Z)- and 5% (E)- mixture. Early structure studies: W. D. Niegisch, W. H. Stahl, Food Res. 21, 657 (1956); C. G. Spare, A. I. Virtanen, Acta Chem. Scand. 17, 641 (1963). Structure: M. H. Brodnitz, J. V. Pascale, J. Agric. Food Chem. 19, 269 (1971). Stereochemistry: E. Block et al., J. Am. Chem. Soc. 101, 2200 (1979); eidem, Tetrahedron Lett. 21, 1277 (1980). Chemistry: eidem, J. Am. Chem. Soc. 102, 2490 (1980).
