5-(2-Chlorophenyl)-3-methylspiro(1, 3-oxazolidine-4, 2'-3H-1, 3-benzoxazole)-2-one

5-(2-Chlorovinyl)-2'-deoxyuridine

5-(2-Cyanovinyl)-2'-deoxyuridine

5-(2-Cyclohexylidene-ethyl)-5-ethylbarbiturate

5-(2-Dimethylaminoethyl)-5H-pyrazino(2, 3-b)indole

5-(2-Dodecylphenyl)-4, 6-dithianonanedioic acid

5-(2-Fluoroethyl)-2'-deoxyuridine

5-(2-Fluoroethyl)-2'-fluoroarabinofuranosyluracil

5-(2-Fluorophenyl)-1-(pyridin-3-ylsulfonyl)-1H-pyrrole-3-carbaldehyde

5-(2-Fluorophenyl)-1H-pyrrole-3-carbaldehyde

5-(2-Fluorophenyl)-1H-pyrrole-3-carbonitrile

5-(2-Fluorovinyl)-2'-deoxyuridine

5-(2-Furyl)-4, 5-dihydro-3-methyl-1H-pyrazole

5-(2-Furylmethylene)-2-thioxo-1, 3-thiazolidin-4-one

5-(2-Hydroxy-ethyl)-1-(4-hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-1H-pyrimidine-2, 4-dione

5-(2-Hydroxyethyl)-3, 4-dimethylthiazolium iodide

5-(2-Hydroxyphenyl)-5-phenylhydantoin

5-(2-Hydroxypropyl)-5-(1-methylbutyl) barbituric acid

5-(2-Iodovinyl)-1-(2'-fluoro-2'-deoxyuridine)

5-(2-Iodovinyl)-2'-deoxyuridine