4-[5-(4-methoxy-phenyl)-oxazol-2-yl]-phthalic acid anhydride 、
3-羟基-N,N-二乙基苯胺 生成 (9-{2-Carboxy-4-[5-(4-methoxy-phenyl)-oxazol-2-yl]-phenyl}-6-diethylamino-xanthen-3-ylidene)-diethyl-ammonium; chloride 、 (9-{2-Carboxy-5-[5-(4-methoxy-phenyl)-oxazol-2-yl]-phenyl}-6-diethylamino-xanthen-3-ylidene)-diethyl-ammonium; chloride