ethyl 5-(dimethylamino)naphthalene-1-sulfonate

4,5-二氟-2-硝基苯甲酸乙酯

N,Nˊ-二苄基二硫代草酰胺

3-hydroxy-4-(4-methylanilino)-4-oxobut-2-enoic acid

(1-chloroethylideneamino)oxy-(ethoxymethyl)-oxophosphanium