Photoresist Chemicals 1,6-Naphthyridine, 5,6,7,8-tetrahydro-6-[2-[4-(4-methoxyphenyl)-1-piperazinyl]ethyl]-, (2E)-2-butenedioate (1:2) Cas:95395-68-9 Molecular Formula:C21H28N4O.2C4H4O4