C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/224, 260/264
C07D 487/04 (2006.01) A61K 31/50 (2006.01)
Patent
CA 1335994
2,3-Dihydro-1-(8-methyl-1,2,4-triazolo[4,3- b]pyridazin-6-yl)-4(1H)-pyridinone, as shown below, has been prepared in substantially pure form and has been found to be useful for alleviating bronchial spasms in mammals. Image Synthesis of this material through phenylselenyl intermediates is described.
538692
Gowling Lafleur Henderson Llp
Merrell Dow Pharmaceuticals Inc.
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