(4R,7R,10S,13S,16S,19S,22S,25S,28S,31S,34S,37R)-37-{2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2-[(2S)-2-{[(2S)-1-[(2S)-2-[(2S)-2-[(2S)-2-{[(2S)-1-[(2R)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]propanamido]-3-carbamoylpropanamido]-3-hydroxypropanamido]-3-carbamoylpropanoyl]pyrrolidin-2-yl]formamido}propanamido]-4-(methylsulfanyl)butanamido]propanoyl]pyrrolidin-2-yl]formamido}-5-carbamimidamidopentanamido]-4-carboxybutanamido]-5-carbamimidamidopentanamido]hexanamido]propanamido]a

(4R,7S,10S,13S,16S,19S,22R,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-(naphthalen-2-ylmethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

H-c(Cys3-Phe6-Phe7-DTrp8-Lys9-Thr10-Phe11-Cys14)-OH

SRIF-D-Trp8

15-28-Somatostatin-28

4-(((3S,6S,9R,12S,15S,20S,Z)-9-((1H-indol-2-yl)methyl)-15-((R)-2-amino-3-phenylpropanamido)-6-(4-aminobutyl)-20-((2R,3R)-1,3-dihydroxybutan-2-ylcarbamoyl)-12-(naphthalen-1-ylmethyl)-2,5,8,11,14-pentaoxo-1,4,7,10,13-pentaazacycloicos-17-en-3-yl)methyl)phenyl benzoate

(4R,7S,10S,13S,16R,19S,22S,25R)-25-amino-13-(4-aminobutyl)-7,19,22-tribenzyl-10-[(1R)-1-hydroxyethyl]-16-(naphthalen-2-ylmethyl)-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carboxylic acid

(4R,7S,10S,13S,16S,19S,22R,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-13,25,28-tribenzyl-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-37-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

4-(((3S,6S,9R,12S,15S,20S,Z)-9-((1H-indol-2-yl)methyl)-15-((R)-2-amino-3-phenylpropanamido)-6-(4-aminobutyl)-12-benzyl-20-((2R,3R)-1,3-dihydroxybutan-2-ylcarbamoyl)-2,5,8,11,14-pentaoxo-1,4,7,10,13-pentaazacycloicos-17-en-3-yl)methyl)phenyl benzoate

(4R,7S,10S,13S,16S,19S,22S,25R)-25-amino-13-(4-aminobutyl)-7,19,22-tribenzyl-10-[(1R)-1-hydroxyethyl]-16-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carboxylic acid

(4R,7S,10S,13S,16S,19R,22S,25S,28R)-16-(4-aminobutyl)-10,22,25-tribenzyl-28-[[(2S)-5-carbamimidamido-2-[[2-[2-[2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]ethoxy]ethoxy]acetyl]amino]pentanoyl]amino]-13-[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-19-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24,27-octaoxo-1,2-dithia-5,8,11,14,17,20,23,26-octazacyclononacosane-4-carboxylic acid

(2S,5R,8S,11S,14S,19S,Z)-5-((1H-indol-2-yl)methyl)-19-((R)-2-amino-3-phenylpropanamido)-8-(4-aminobutyl)-N-((2R,3R)-1,3-dihydroxybutan-2-yl)-11-((R)-1-hydroxyethyl)-2-(naphthalen-1-ylmethyl)-3,6,9,12,20-pentaoxo-1,4,7,10,13-pentaazacycloicos-16-ene-14-carboxamide

(4S,7S,10S,13S,16S,19S,22R,25S,28S,31S,34S,37R)-19-(4-aminobutyl)-31-(2-amino-2-oxoethyl)-13,25,28-tribenzyl-34-(3-carbamimidamidopropyl)-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-37-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

(2S,5R,8S,11S,14S,19S,Z)-5-((1H-indol-2-yl)methyl)-19-((R)-2-amino-3-phenylpropanamido)-8-(4-aminobutyl)-2-benzyl-N-((2R,3R)-1,3-dihydroxybutan-2-yl)-11-((R)-1-hydroxyethyl)-3,6,9,12,20-pentaoxo-1,4,7,10,13-pentaazacycloicos-16-ene-14-carboxamide

4-(((3S,6S,9R,12S,15S,20S,E)-9-((1H-indol-2-yl)methyl)-15-((R)-2-amino-3-phenylpropanamido)-6-(4-aminobutyl)-12-benzyl-20-((2R,3R)-1,3-dihydroxybutan-2-ylcarbamoyl)-2,5,8,11,14-pentaoxo-1,4,7,10,13-pentaazacycloicos-17-en-3-yl)methyl)phenyl benzoate

2-[[(2S)-2-[[(4R,7S,10S,13S,16R,19S,22S,25S)-13-(4-aminobutyl)-25-[[(2S)-6-amino-2-[[(2S)-2-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-7,19,22-tribenzyl-10-[(1R)-1-hydroxyethyl]-16-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carbonyl]amino]-3-hydroxypropanoyl]amino]acetic acid

(4R,7S,10S,13S,16S,19S,22R,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-[(4-hydroxyphenyl)methyl]-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

2-[[(2S)-2-[[(4R,7S,10S,13S,16R,19S,22S,25R)-13-(4-aminobutyl)-25-[[(2S)-6-amino-2-[[(2S)-2-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-7,19,22-tribenzyl-10-[(1R)-1-hydroxyethyl]-16-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carbonyl]amino]-3-hydroxypropanoyl]amino]acetic acid

(4R,7S,10S,13S,16S,19R,22S,25S,28R)-16-(4-aminobutyl)-10,22,25-tribenzyl-13-[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-19-(1H-indol-3-ylmethyl)-6,9,12,15,18,21,24,27-octaoxo-28-[[2-[[2-[2-[2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]ethoxy]ethoxy]acetyl]amino]acetyl]amino]-1,2-dithia-5,8,11,14,17,20,23,26-octazacyclononacosane-4-carboxylic acid

(4R,7S,10S,13S,16S,19S,22S,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-(naphthalen-2-ylmethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

(2S,5R,8S,11S,14S,19S,Z)-5-((1H-indol-2-yl)methyl)-19-((R)-2-amino-3-phenylpropanamido)-8-(4-aminobutyl)-2-benzyl-N-((2R,3R)-1,3-dihydroxybutan-2-yl)-11-(4-hydroxybenzyl)-3,6,9,12,20-pentaoxo-1,4,7,10,13-pentaazacycloicos-16-ene-14-carboxamide

(2S,5R,8S,11S,14S,19S,E)-5-((1H-indol-2-yl)methyl)-19-((R)-2-amino-3-phenylpropanamido)-8-(4-aminobutyl)-2-benzyl-N-((2R,3R)-1,3-dihydroxybutan-2-yl)-11-(4-hydroxybenzyl)-3,6,9,12,20-pentaoxo-1,4,7,10,13-pentaazacycloicos-16-ene-14-carboxamide

(4R,7S,10S,13S,16S,19S,22S,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-22-[(4-hydroxyphenyl)methyl]-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

(4R,7S,10S,13S,16S,19S,22R,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-22-[(1-benzylimidazol-4-yl)methyl]-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

(4R,7S,10S,13S,16R,19S,22S,25R)-25-amino-13-(4-aminobutyl)-7,19,22-tribenzyl-16-[(1-benzylimidazol-4-yl)methyl]-10-[(1R)-1-hydroxyethyl]-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carboxylic acid

(4R,7S,10S,13S,16S,19S,22S,25S,28S,31S,34S,37R)-19,34-bis(4-aminobutyl)-31-(2-amino-2-oxoethyl)-37-[[2-[[(2S)-2-aminopropanoyl]amino]acetyl]amino]-13,25,28-tribenzyl-22-[(1-benzylimidazol-4-yl)methyl]-10,16-bis[(1R)-1-hydroxyethyl]-7-(hydroxymethyl)-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carboxylic acid

(4R,7S,10S,13S,16S,19S,22S,25R)-25-amino-13-(4-aminobutyl)-7,19,22-tribenzyl-16-[(1-benzylimidazol-4-yl)methyl]-10-[(1R)-1-hydroxyethyl]-6,9,12,15,18,21,24-heptaoxo-1,2-dithia-5,8,11,14,17,20,23-heptazacyclohexacosane-4-carboxylic acid

2-[[(2S)-2-[[(2S,3R)-2-[[(4R,7S,10S,13R,16S,19R)-19-[[(2S)-4-amino-2-[[(2S)-6-amino-2-[[(2S)-2-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-4-oxobutanoyl]amino]-10-(4-aminobutyl)-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]acetic acid

2-[[(2S)-2-[[(2S,3R)-2-[[(4R,7S,10S,13R,16S,19R)-19-[[(2S)-4-amino-2-[[(2S)-6-amino-2-[[(2S)-2-[[2-[[(2S)-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetyl]amino]propanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-4-oxobutanoyl]amino]-10-(4-aminobutyl)-16-benzyl-7-[(1R)-1-hydroxyethyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]acetic acid