Photoresist Chemicals Propanoic acid, 2-[4-[(1E)-3-[4-(hexylthio)phenyl]-3-oxo-1-propen-1-yl]-2,6-dimethylphen oxy]-2-methyl-, 1,1-dimethylethyl ester Cas：923978-82-9 Molecular Formula：C31H42O4S