recently , leukotriene c4 ( ltc4:5 ( s ) -hydroxy,6 ( r ) -s-glutathionyl-7,9-trans , 11,14-cis-eicosatetraenoic acid ) and d4 ( ltd4:5 ( s ) -hydroxy,6 ( r ) -s-cysteinyl-glycyl-7,9-trans,11,14-cis-eicosatetraenoi c acid ) were found to have biological effects in several bioassay systems , which are strikingly similar to those previously reported for impure extracts of srs-a .
C0023544
ltd4
C0038091
of