5(6H), 8(8aH)-dioxo-1H,3H-thiazolo[4,3-c] [1,4]thiazine
5,6-dihydro-4H-1,3-oxa(or thia)zine derivatives, their preparati
5-Fluorouracil derivatives
5-Oxo-3-thiazoline oxime and 2-oxo-5,6-dihydro-2H-1,4-thiazine o
5-Substituted amino-6H-1,2,4-oxadiazin-3-(2H)-ones
5-substituted-9-disubstituted amino-12-substituted carbonylbenzo