Photoresist Chemicals Thiourea, N-[2,6-bis(1-methylethyl)-4-nitrophenyl]-N’-[(1R,2R)-2-(1,3-dihydro-1,3- dioxo-2H-isoindol-2-yl)cyclohexyl]- Cas:878049-80-0 Molecular Formula:C27H32N4O4S