Photoresist Chemicals 2H-Indol-2-one, 1,3-dihydro-3-(1-(2-(2,3-dihydro-1,4-benzodioxin-2-yl)-2-hydroxyethyl)-4-piperidinyl)-, monohydrochloride Cas：72831-91-5 Molecular Formula：C23H27ClN2O4