Photoresist Chemicals Acetamide, N-[2-[[4-[4-([1,1′-biphenyl]-4-ylcarbonyl)-1-piperazinyl]-6-ethylthieno[2,3- d]pyrimidin-2-yl]thio]ethyl]- Cas：910802-54-9 Molecular Formula：C29H31N5O2S2