H-Tyr-Arg-Ser-Arg-Lys-Tyr-Ser-Ser-Trp-Tyr-OH; L-tyrosyl-L-arginyl-L-seryl-L-arginyl-L-lysyl-L-tyrosyl-L-seryl-L-seryl-L-tryptophyl-L-tyrosine; (6S,9S,12S,15S,18S,21S,24S,27S,30S)-27-((1H-indol-3-yl)methyl)-1,1-diamino-6-((S)-2-amino-3-(4-hydroxyphenyl)propanamido)-15-(4-aminobutyl)-12-(3-((diaminomethylene)amino)propyl)-18,30-bis(4-hydroxybenzyl)-9,21,24-tris(hydroxymethyl)-7,10,13,16,19,22,25,28-octaoxo-2,8,11,14,17,20,23,26,29-nonaazahentriacont-1-en-31-oic acid
![Picture of BQ-123 [Cyclo(D-Trp-D-Asp-Pro-D-Val-Leu)]](https://bc3c83a0874864a50753-7010fd7f2bdf81ab41ee28479491701e.ssl.cf2.rackcdn.com/media//catalog/AR-P01448.jpg?size=256 "Show details for BQ-123 [Cyclo(D-Trp-D-Asp-Pro-D-Val-Leu)]")
