2,6-diphenyl-4-(2-thioxanthen-9-ylideneethenylidene)pyran

4-[4-(2,6-diphenylpyran-4-ylidene)buta-1,2-dienylidene]-2,6-diphenylpyran

4-(2,6-diphenylpyran-4-ylidene)-2,6-diphenylpyran

4-苯基-2-甲硫基嘧啶

perchloric acid,pyridin-4-amine