4-phenyl-pyridine derivatives

4-substituted amido-8-disubstituted aminoimidazophenoxazines

4H-1,4-Benzothiazine derivatives and intermediates thereto

4H-3,1-benzoxazin-4-one derivative

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

6,7-Dihydro-8H-pyrrolo[2,1-c][1,4]thiazine-1(8aH),4(3H)-dione

6- or 7- (2-imino-2-imidazolidine)-1,4-benzoxazines as .alpha. a

6-(substituted methylene) penems and intermediates

6-Aryluracils

6-benzoxazinyl- and 6-benzothiazinyl 2,3,4,5-tetrahydropyridazin

6-benzoxazinyl-2,3,4,5-tetrahydropyridazin-3-ones

6-Loweralkoxy or loweralkylthio-3-cephem-4-carboxylic acids

6H-pyrazolo-[4,5,1-d,e]acridin-6-one derivatives having anit-tum

7 -[D.alpha.-(4-Hydroxy-1,5-naphthyridine-3-carboxamido)-.alpha.

7(2-Phenyl or thienyl-2-isonicotinoyloxyacetamido)-3-(1-methyl-1