 5Z,8Z,11Z,14Z-eicosatetraenoic acid) and concurrently the 8"Z" double bond in this arachidonate moves to the 9"E" position to form the intermediate product, 12"S"-hydroperoxy-5Z,8Z,10E,14Z-eicosatetraenoic acid (i.e.12"S"-hydroperoxyeicosatetraenoic acid or 12"S"-HpETE).Second, 12"S"-HpETE is converted to the hepoxilin products, HxA3 (i.e.