L-Pyroglutamyl-L-leucyl-L-argininal

N-[1-(2-carbamothioylpyrrolidin-1-yl)-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-5-oxopyrrolidine-2-carboxamide

L-pyroGlutamyl-L-glutamyl-L-aspartyl-L-cysteinyl-L-lysine amide

L-pyroglutamyl-L-histidyl-L-trypthophyl-L-seryl-L-tyrosine tert-butyl ester

L-Pyroglutamyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosylglycine Hydrazine

(2S,3R)-2-[[(2S)-4-amino-2-[[(2S,3R)-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-2-amino-4-methylpentanoyl]amino]hexanoyl]amino]hexanoyl]amino]-3-hydroxybutanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxybutanoic acid

(2S)-2-[[(2S)-1-[(2S)-1-[(2S)-1-[(2S)-2-amino-4-methylpentanoyl]pyrrolidine-2-carbonyl]pyrrolidine-2-carbonyl]pyrrolidine-2-carbonyl]amino]-3-phenylpropanoic acid

3-allyl-8-(3,4-dimethylphenyl)-1,6,7-trimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

1,3,7-trimethyl-8-(4-phenoxyphenyl)-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

methyl 2-(1,6,7-trimethyl-2,4-dioxo-8-(4-phenoxyphenyl)-1H-imidazo[2,1-f]purin-3(2H,4H,8H)-yl)acetate

8-(2,4-dimethoxyphenyl)-1,7-dimethyl-3-(3-methylbenzyl)-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

3-[(2-fluorophenyl)methyl]-1,7-dimethyl-8-(4-methylphenyl)-1H,2H,3H,4H,8H-imidazo[1,2-g]purine-2,4-dione

8-(furan-2-ylmethyl)-1,7-dimethyl-3-(3-methylbenzyl)-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

8-(4-methoxyphenyl)-1,7-dimethyl-3-(4-methylbenzyl)-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

3-(2,5-dimethylbenzyl)-1,7-dimethyl-8-propyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

3-benzyl-1,7-dimethyl-8-(p-tolyl)-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

1,6,7-trimethyl-3-phenethyl-8-phenyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione