pyrimido,oxazine,oxazin,[1,4]oxazin,[1,4]oxazine
[1,4]oxazin
92759-41-6Pyrido[2,1-c][1,4]oxazine-8,9-dicarboxylic acid,1,3,4,6-tetrahydro-4,4-dimethyl-1,6-dioxo-, dimethyl ester [1,4]oxazine
105124-65-0(4aS,11bS)-4-[(2,6-dimethoxyphenyl)carbonyl]-2,3,4,4a,5,6,7,11b-octahydrobenzo[6,7]cyclohepta[1,2-b][1,4]oxazine