(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = 9-hydroperoxy-(5Z,7E,11Z,14Z)-eicosatetraenoate
(5z,8z,11z,14z)-eicosatetraenoate + o2 = 9-hydroperoxy-(5z,7e,11z,14z)-eicosatetraenoate
(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = 9-hydroperoxy-(5Z,7E,11Z,14Z)-eicosatetraenoate
(5z,8z,11z,14z)-eicosatetraenoate + o2 = 9-hydroperoxy-(5z,7e,11z,14z)-eicosatetraenoate