4H-Benzo[4,5]cyclohepta[1,2-b]thiophenes

4H-Imidazol-4-ones and their pharmaceutical use

4H-Imidazo[2,3-c]pyrido[2,3-e][1,4]oxazine derivatives

4H-indolo(1,2-d)(1,2,4)triazolo(4,3-A)(1,4)benzodiazepines

4H-pyran charge control agents for electrostatographic...

4H-pyrano[4,3-d]thiazole derivatives and process therefor

4H-pyrazolo[1 ,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8

4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H

4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H

4H-Pyrazolo[4',3':5,6]pyri do[4,3-d][1,2,4]triazolo[3,2-b]-pyrim

4H-Pyrido[3,2a]-1,3,2-dioxophosphorane derivatives

4H-pyrimido[2,1-a]isoquinolin-4-one derivatives

4H-quinolizin-4-one compounds exhibiting therapeutic activities

4H-quinolizin-4-one compounds useful for the treatment of allerg

4H-quinolizin-4-ones for treatment of diseases associated with i

4H-S-Triazolo[4,3-2][1,5]benzodiazepin-5-ones

4H-s-triazolo[4,3-a][1,5]benzodiazepin-5-ones

4H-s-Triazolo[4,3-a][1,5]benzodiazepin-5-ones as tranquilizers

4H-Thieno-[3,2-b][1]-benzazepines

4H-Thieno[3,4-b][1,4]benzodiazepines