Photoresist Chemicals 2-Pyridinecarboxylic acid, 5-(4-chlorobutoxy)-, 3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-yl ester Cas：85446-82-8 Molecular Formula：C39H60ClNO4