6-Bromo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine
7-Bromo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine
6-Chloro-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine
3,4-Dihydro-2H-pyrido[3,2-b]-1,4-oxazine
4-Methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-7-carboxylic acid
