3,4-Diphenyl-selenophen-2-carbonsaeure

3,4-diphenyl-selenophene-2,5-dicarboxylic acid

5-hydroxy-3,3-diphenyl-1-benzofuran-2-one

3,4-diphenyl-1,2,5-thiadiazole

2,5-diethyl-4-hydroxy-3,4-diphenylcyclopent-2-en-1-one