A method for the synthesis of new reagent 2,3,7 trihydroxy 9 (2,4 dihydroxy) phenylfluorone (DHPF) was introduced with hydroquinone and 2,4 dihydroxybenzaldehyde as basic material.

• 以对苯二酚、2,4-二羟基苯甲醛为基本原料,报道了新显色剂2,3,7-三羟基-9-(2,4-二羟基)苯基荧光酮(DHPF)的合成方法。