2H-1,4-BENZOXAZIN-3(4H)-ONE, 4-HYDROXY-6-METHOXY- 4-Hydroxy-6-methoxy-1,4-benzoxazinone 4-Hydroxy-6-methoxy-2H-1,4-benzoxazin-3(4H)-one 69884-06-6 BRN 0985974