Photoresist Chemicals Spiro[3H-indole-3,4′-piperidine], 5-chloro-1′-[(2-ethyl-1H-imidazol-4-yl)methyl]-1,2-dihydro-1-(1H-purin-6- yl)- Cas：908286-35-1 Molecular Formula：C23H25ClN8