1,2:3,4-benzenetetracarboxylic anhydride

3-methyl-5,6,7,8-tetrahydrobenzo[c]phenanthrene

(2,4-dimethyl-benzyl)-trimethyl-ammonium, chloride

3,5-dimethylphenylphosphonic acid

5,6,7,8-tetrahydro-3,5,5,8,8-pentamethylnaphthalene-1-carbaldehyde