Hydroxyquinoxaline; 2-hydroxy quinoxaline; 2-Quinoxalinone; 2-HYDROXYQUINOXALINE; QUINOXALIN-2-OL; 1,2-Dihydroquinoxalin-2-one; 2-(1H)-Quinoxalinone; 2(1H)-Quinoxalinone; 2-Quinoxalone; 3-Quinoxalinone; Quinoxalin-2-one; Quinoxalinone; quinoxalin-2(1H)-one; 2-QUINOXALINOL 99%