pyrimido,oxazine,oxazin,[1,3]oxazine
Oxazin
28941-52-81H,3H-Pyrido[1,2-c][1,3]oxazine, 4,4a,5,6,7,8-hexahydro-4-methyl-,trans- [1,3]oxazine
1357289-10-1(S)-7-phenylMethoxy-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylic acid Methyl ester