Photoresist Chemicals 1H-Pyrrole-2-carboxylic acid, 4-cyano-5-ethyl-1-methyl-3-[4-[1-methyl-2-[[(1-methylethyl)sulfonyl]amino ]ethyl]phenyl]-, ethyl ester Cas：851195-66-9 Molecular Formula：C23H31N3O4S