4-Alkyl-pyrazolo[5,1-b]-quinazolin-9(4H)-ones and anti-allergic

4-alkyl-thiophenyl-ethanolamines, having an activity the cerebra

4-alkylamino-6-(C.sub.3-5 -hydrocarbyl)thieno[2,3-B]thiopyran-2-

4-Alkylimidazole derivatives and anti-hypertensive use thereof

4-alkylindolonaphthyridines and their therapeutical application

4-Alkylsubstituted-3-hydroxy-3-pyrroline-2,5-dione inhibitors of

4-Alkylsulfonyloxyphenyl N-alkylthiolcarbamates and use thereof

4-alkylthio-pyrimidin-5-ylacetic acid derivates

4-amidino chroman and 4-amidino pyrano (3,2-c) pyridine derivati

4-amidino chroman and 4-amidino pyrano (3,2-c) pyridine derivati

4-amidino pyrano (3,2-c) pyridine derivatives, and pharmaceutica

4-Amido-2-alkoxy thiazoles and composition

4-amino 5-cyanopyrimidine derivatives

4-amino 6-substitutes mycophenolic acid and derivatives

4-amino androstendione derivatives and process for their prepara

4-amino derivatives of 5-substituted mycophenolic acid

4-amino quinolines and naphthyridines and their use as medicines

4-amino substituted phenoxyalkyl carboxylic acid, ester, and alc

4-amino substituted-2-substituted-1,2,3,4-tetrahydroquinolines

4-amino(alkyl)cyclohexane-1-carboxamide compound and use thereof