Method for obtaining pure enantiomers of a pyridazinone derivative
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Feb 4, 1999
filing date -
Mar 27, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a method for preparing optically active enantiomers of [[4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl]-hydrazono]propanedinitrile (I), particularly (-) enantiomer of (I). Furthermore, the invention relates to a novel crystalline polymorphic form of the (-) enantiomer.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully