7, 8-(methylenedioxy)-14-hydroxyberbane

7, 8-Benzlepidine

7, 8-Bnzoquinoline

7, 8-Dehydro-9, 10-desacetyldoxorubicinone

7, 8-Dehydroretinoic acid, all trans-

7, 8-Dehydrorutaecarpine

7, 8-Diaminopelargonic acid

7, 8-Diazabicyclo(4.2.2)dec-7-ene

7, 8-Diazabicyclo(4.2.2)dec-7-ene 7, 8-dioxide

7, 8-Diazabicyclo(4.2.2)dec-7-ene 7-oxide

7, 8-Diazatetracyclo(3.3.0.02, 4.03, 6)oct-7-ene

7, 8-Diazatricyclo(4.2.2.02, 5)dec-7-ene, (1alpha, 2beta, 5beta, 6alpha)-

7, 8-Dichloro-1, 2, 3, 4-tetrahydroisoquinoline

7, 8-dichloro-1, 2, 3, 4-tetrahydroisoquinoline

7, 8-Dichloro-2-dibenzofuranol

7, 8-Dichloro-N-(2-(dimethylamino)ethyl)dibenzo(b, e)(1, 4)dioxin-1-carboxamide

7, 8-Didehydro-6alpha-hydroxy-4, 5alpha-epoxy-17-methyl-3-(2-morpholinoethoxy)morphinan bis(phosphate)

7, 8-Didehydro-6alpha-hydroxy-4, 5alpha-epoxy-3-ethoxy-17-methylmorphinan (1S)-7, 7-dimethyl-2-oxobicyclo(2.2.1)heptane-1-methanesulphonate

7, 8-Diethylflavin

7, 8-Dihydro-14-hydroxy-N-phenethylnorcodeine