5-(Phenyl or benzyl amino)methyl-pyrrolo[2,3-d]pyrimidin-4-one

5-(Substituted benzyl)-6-oxo-2-piperazine carboxylic acids and e

5-Alkylsulphonyl- and 5-alkenylsulphonylbarbituric acids and der

5-Amino-2,8-dialkyl-7,8-dihydro-7-oxo-pyrido-[2,3-d]pyrimidine-6

5-Aminomethyl-2,3-dihydro-2-oxo-1H-imidazole-4-carboxylic acid d

5-arylindole derivatives

5-Chloro-7,8-dihydro-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxylic

5-cyano-2-aminopyrimidine derivatives

5-deaza-10-oxo-and 5-deaza-10-thio-5,6,7,8-tetrahydrofolic acids

5-fluoro-3,4-dihydro-2,4-dioxo-N-(3-indolyl)-1(2H)-pyrimidinecar

5-Fluorouracil derivatives

5-Fluorouracil derivatives

5-Fluorouracil derivatives

5-Fluorouracil derivatives

5-fluorouracil derivatives useful as carcinostatic substances

5-Fluorouracil nitroxyl derivatives possessing antitumor activit

5-hydroxy-2,3-dihydrobenzofuran analogs as leukotriene biosynthe

5-Methyl-2-trifluoromethylindolo[2,3-b]quinoxaline

5-methyl-5-deaza analogues of methotrexate and N.sup.10 -ethylam

5-Phenylcarbamoylbarbituric acid compounds