Organic IntermediateChina OLED Intermediates Biphenyl-4-Yl (9, 9-diphenyl-9H-fluoren-2-yl) Amine 1268520-04-2, Find details about China OLED Intermediate, 1268520-04-2 from OLED Intermediates Biphenyl-4-Yl (9, 9-diphenyl-9H-fluoren-2-yl) Amine 1268520-04-2