4-Pyrimidone compounds

4-Quinazolone compounds

4-Substituted imidazo [1,2-a]quinoxalines

4-substituted phenyl crotyl ether derivative

4-Substituted-1-(3-[2-aminoanilino]-1-pyrazole-4-carbonyl)pipera

4-substituted-2(or 3)aminocarbonyl-1-piperazineacetamide

4-substituted-6-aryl-pyrimidine compounds

4-Substituted-piperidino carboxamides

4-thieno[2,3-D]pyrimidin-4-YL piperazine compounds

4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, a

5 step process for preparing certain 2,4-diamino-5-pyrimidine-su

5,5-dichloro-4,5-dihydro-6-hydroxy-2-trichloromethylpyrimidin-4-

5,5-Difluorouracil

5,6,7,8-Tetrahydrotriazolo{4,3-alpha}-pyridin-3(2H)-ones

5,6-dialkoxy-4-imino-2(1H)quinazolinone derivatives

5,8-Dihydro-6H-pyrido[2,3-d]pyrimidin-7-ones

5-(1-fluoro-vinyl)-1H-pyrimidine-2,4-dione derivatives useful as

5-(4-Amino or acylaminophenyl)-2(1H)-pyrazinones having inotropi

5-(4-amino-3,5-dimethoxyphenyl)-5-hydroxy-barbituric acid

5-(4-Nitrophenyl)-2(1H)-pyrazinones