1,8-Pyrenedione, 2,7-dibromo-3,6-dihydroxy- 2,7-Dibromo-3,6-dihydroxy-1,8-pyrenedione 2,7-Dibromo-3,6-dihydroxypyrene-1,8-dione 68109-93-3 EINECS 268-502-4