Photoresist Chemicals 1-Propanone, 3-[3-chloro-4-(2-hydroxyethoxy)-5-methoxyphenyl]-1-(4,5,6,7-tetrahydro- 3,5,5-trimethylbenzo[c]thien-1-yl)- Cas：910636-09-8 Molecular Formula：C23H29ClO4S