2-[(2S)-2-[[(2S)-2-[[(2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]pyrrolidine-2-carbonyl]amino]-4-methylpentanoyl]amino]-3-phenylpropanoyl]oxyacetic acid

2-[(2S)-2-[[(2S)-2-acetamido-4-methylpentanoyl]amino]-3-phenylpropanoyl]oxyacetic acid

2-[(2S)-2-acetamido-3-phenylpropanoyl]oxyacetic acid

2-[(2S)-2-[[(2S)-2-[[(2S)-1-acetylpyrrolidine-2-carbonyl]amino]-4-methylpentanoyl]amino]-3-phenylpropanoyl]oxyacetic acid

2-[2-[[(2S)-2-[[(2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]pyrrolidine-2-carbonyl]amino]-4-methylpentanoyl]amino]acetyl]oxyacetic acid

2-[2-[[(2S)-2-[(2S)-1-acetylpyrrolidine-2-carbonyl]oxy-4-methylpentanoyl]amino]acetyl]oxyacetic acid

2-((S)-2-((S)-2-((S)-1-((4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-sec-butyl-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl)pyrrolidine-2-carboxamido)-4-methylpentanamido)-3-phenylpropanamido)acetic acid

N-acetyl-(S)-prolyl-(S)-leucyl-(S)-phenylalanylglycine

N-acetyl-(S)-phenylalanylglycine

N-acetyl-(S)-leucyl-(S)-phenylalanylglycine

(3S,6S,9S,12S,18S,24S,27S)-1-((S)-1-((5S,8S,14S,17S,20S,23S,26S,29S,32S,35S,38S,41S,44S,47S)-41-((1H-imidazol-5-yl)methyl)-5-((4R,7S,10S,13S,16S,22R)-22-amino-16-(2-amino-2-oxoethyl)-7-((R)-1-hydroxyethyl)-10-(hydroxymethyl)-13-isobutyl-6,9,12,15,18,21-hexaoxo-1,2-dithia-5,8,11,14,17,20-hexaazacyclotricosane-4-carboxamido)-32-(2-amino-2-oxoethyl)-23-(3-amino-3-oxopropyl)-35-(4-aminobutyl)-29,38,47-tribenzyl-26-(carboxymethyl)-17-(4-hydroxybenzyl)-14,20,44-tris((R)-1-hydroxyethyl)-8-isobutyl-6,9,12,15,18,21,24,27,30,33,36,39,42,45-tetradecaoxo-2-thia-7,10,13,16,19,22,25,28,31,34,37,40,43,46-tetradecaazaoctatetracontane)pyrrolidin-2-yl)-3-(3-amino-3-oxopropyl)-27-benzyl-12-sec-butyl-6-((R)-1-hydroxyethyl)-18-isopropyl-9,24-dimethyl-1,4,7,10,13,16,19,22,25,28-decaoxo-2,5,8,11,14,17,20,23,26,29-decaazahentriacontan-31-oic acid

(S)-valylglycyl-(S)-alanyl-(S)-phenylalanylglycine

2-(2-((S)-2-((S)-1-((4R,7S,10S,13S,16S,19R)-19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-sec-butyl-16-(4-hydroxybenzyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl)pyrrolidine-2-carboxamido)-4-methylpentanamido)acetamido)acetic acid

glycyl-(S)-alanyl-(S)-phenylalanylglycine

(S)-alanyl-(S)-phenylalanylglycine

procalcitonin

N-acetyl-(S)-prolyl-(S)-leucylglycylglycine

N-acetyl-(S)-leucylglycylglycine

2-[[(2S)-pyrrolidine-2-carbonyl]amino]acetic acid

(S)-valylglycyl-(S)-alanyl-(S)-prolylglycine

N-Acetylglycylglycine

glycyl-(S)-alanyl-(S)-prolylglycine

Ala-Pro-Gly

((S)-2-Amino-3-phenyl-propionylamino)-acetic acid

Substrate analogue, 15