Photoresist Chemicals Phenol, 2-chloro-4-[8-[2-(1-ethyl-4-piperidinyl)ethoxy]-6-fluoro-9-methoxy-1-meth yl-3H-pyrazolo[3,4-c]isoquinolin-5-yl]- Cas:838857-49-1 Molecular Formula:C27H30ClFN4O3