87607-29-2 Carbamic acid, (5-amino-3-phenyl-2H-pyrido[4,3-b]-1,4-oxazin-7-yl)-, ethyl ester Carbamic acid, (5-amino-3-phenyl-2H-pyrido[4,5-b]-1,4-oxazin-7-yl)-, ethyl ester NSC344270