3, 4-Chrysenediol, 3, 4-dihydro-, trans-(+-)-

3, 4-Chrysenedione

3, 4-Cyclobutenopyridine

3, 4-Dehydrobrevicomin

3, 4-Dehydrochlorambucil

3, 4-Dehydrocilostazol

3, 4-Dehydroproline

3, 4-Di-O-acetyl-1, 6-dichloro-1, 6-dideoxy-beta-D-fructofuranosyl 4-chloro-4-deoxy-alpha-D-galactose, triacetate

3, 4-Di-O-caffeoylquinic acid

3, 4-Di-O-galloyl-5-O-digalloylquinic acid

3, 4-Di-O-galloylquinic acid

3, 4-Di-O-methyl-alpha-L-rhamnose

3, 4-Di-O-methyl-L-rhamnose

3, 4-Di-sec-butylphenol

3, 4-Diacetoxy-1-butene

3, 4-Diacetoxybenzylidene diacetate

3, 4-Diacetoxyphenylacetic acid

3, 4-Diacetoxyscirpenol

3, 4-Diacetylcevin

3, 4-Diacetylhexane-2, 5-dione