Surfactin (also known as Surfactin mixture, 3-[(3S,6R,9S,12S,15R,18S,21S,25R)-9-(carboxymethyl)-3,6,15,18-tetrakis(2-methylpropyl)-25-(10-methylundecyl)-2,5,8,11,14,17,20,23-octaoxo-12-propan-2-yl-1-oxa-4,7,10,13,16,19,22-heptazacyclopentacos-21-yl]propanoic acid, iso-C15-Surfactin, CAS number: 252023-70-4) is a compound with a molecular weight of 1036.3 Da and a purity of 90% mixed isomers.