2-chloro-4-(3-ethyl-3
H-naphtho[2,1-
d]thiazol-2-ylidenemethyl)-7-methyl-chromenylium; iodide 、 2-ethylamino-naphthalene-1-thiol; potassium salt 以
乙醇 为溶剂,
生成
3-Aethyl-2-<2-<2-hydroxy-4-methoxy-phenyl>-3-<3-aethyl-naphtho<2,1>thiazolinyliden-(2)>-propenyl>-naphtho<2,1>thiazolium