1-phenyl-3,5,6,9-tetramethyl-8,9-dihydrophosphindole sulfide

3,4-dimethyl-1-phenyl-1-sulfanylidene-2,5-dihydro-1λ⁵-phosphole

3,4-Dimethyl-1,5-dihydro-2H-pyrrol-2-one

2,3-dibromo-6,7-dimethylnaphthalene-1,4-dione

2,2,3-三甲基-3-丁烯酸