2-丁烯腈

1-benzothiophene,2-bromo-1-benzothiophene,sulfur dioxide

1,2,3a,3,4,5-六氢芘

1,2-bis(2,4-dihydroxyphenyl)ethane-1,2-dione

2,5-bis(2,4,6-trimethylphenyl)benzene-1,4-diol