Photoresist Chemicals Urea, N-[4-[4-amino-7-(3-pyridinylethynyl)thieno[3,2-c]pyridin-3-yl]phenyl]-N’-( 3-methylphenyl)-, bis(trifluoroacetate) Cas：832695-99-5 Molecular Formula：C28H21N5OS.2C2HF3O2