5-heteroarylamino-6-oxy-substituted 3(2H)-pyridazinones
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United States of America Patent
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Jun 7, 1994
Issued Date -
N/A
app pub date -
Dec 21, 1992
filing date -
Apr 25, 1990
priority date (Note) -
Expired
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Abstract
A compound of the formula, ##STR1## or its pharmaceutically acceptable salt, and its preparation process and pharmaceutical compositions characterized by containing these compounds as effective ingredients. These compounds have strong antithrombotic activity, cardiotonic activity, vasodilator activity and anti-SRS-A activity, and are useful as prophylactic or therapeutic agents for various thrombotic affections, congestive heart failure, hypertension, asthma, immediate type allergy diseases and the like.
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