Pharmaceutical IntermediateChina OLED Intermediates 7-Chloro-2, 2, 6, 6-Tetramethyl-2, 6-Dihydro-1, 5, 8-Triaza-Aceanthrylene, Find details about China OLED Intermediates, Derivatives from OLED Intermediates 7-Chloro-2, 2, 6, 6-Tetramethyl-2, 6-Dihydro-1, 5, 8-Triaza-Aceanthrylene