Photoresist Chemicals Butanamide, N-[5-[2,3-dihydro-1-hydroxy-3-oxo-2-(phenylmethyl)-1H-isoindol-1-yl]-1 H-benzimidazol-2-yl]-4-(phenylmethoxy)- Cas：870602-93-0 Molecular Formula：C33H30N4O4