Gramicidin S is a homodetic cyclic peptide that functions as an antibiotic active pharmaceutical ingredient. It is a cyclic decapeptide composed of two identical pentapeptide sequences with alternating L- and D-amino acids, giving it a rigid, amphipathic structure.
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CAS 113-73-5
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(3R,6S,9S,12S,15S,21R,24S,27S,30S,33S)-9,27-bis(3-aminopropyl)-3,21-dibenzyl-6,24-bis(2-methylpropyl)-12,30-di(propan-2-yl)-1,4,7,10,13,19,22,25,28,31-decazatricyclo[31.3.0.015,19]hexatriacontane-2,5,8,11,14,20,23,26,29,32-decone
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