1,2,3-Trihydro-6-hydroxy-7-oxo-8-undecyl-quinoxaline 154324-53-5 3,4-Dihydro-7-hydroxy-5-undecyl-6(2H)-quinoxalinone 6(2H)-Quinoxalinone, 3,4-dihydro-7-hydroxy-5-undecyl-