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