Photoresist Chemicals 2-Propenoic acid, 3-[1-ethyl-1,3,4,9-tetrahydro-1-(2-hydroxyethyl)-8-(1-methylethyl)pyrano[ 3,4-b]indol-6-yl]-, ethyl ester, (2E)- Cas：849630-87-1 Molecular Formula：C23H31NO4