Photoresist Chemicals 2-Thiophenecarboxamide, 5-methyl-N-[4-[2-oxo-2-[4-[2-oxo-2-(1-pyrrolidinyl)ethyl]-1-piperazinyl]eth yl]-2-thiazolyl]- Cas:895571-47-8 Molecular Formula:C21H27N5O3S2