Photoresist Chemicals 4-Thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid, 3-methyl-6-[(1-methyl-1H-pyrrol-2-yl)methylene]-7-oxo-, 2-propenyl ester, (Z)- Cas:93853-59-9 Molecular Formula:C16H16N2O3S