Photoresist Chemicals Urea, N-[3-(4-amino-2-propyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)propoxy ]-N’-ethyl-, trifluoroacetate Cas:847440-10-2 Molecular Formula:C18H25N7O2.xC2HF3O2