Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-08-17
1994-12-20
Bernhardt, Emily
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
544225, 544230, 544236, A61K 3150, C07D48704
Patent
active
053746325
ABSTRACT:
2,3-Dihydro-1-(8-methyl-1,2,4-triazolo [4,3-b]pyridazin-6-yl)-4(1H)-pyridinone has been prepared in substantially pure form and has been found to be useful for alleviating bronchial spasms in mammals. Synthesis of this material through phenylselenyl intermediates is described.
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Bernhardt Emily
Kolano John J.
Merrell Dow Pharmaceuticals Inc.
Simmons Edlyn S.
Stein William J.
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