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|Title:||Process for the preparation of ifosfamide having improved properties|
|Abstract:||Ifosfamide having improved properties is obtained by crystallization from a solvent mixture selected from the group consisting of (a) a mixture of diethyl ether and a C.sub.1 -C.sub.3 alkanol or (b) a mixture of diisopropyl ether and a C.sub.1 -C.sub.3 alkanol under specific controlled conditions.|
|Inventor(s):||Engel; Jurgen (Alzenau, DE), Muller; Siegfried (Bad Homburg, DE), Laubner; Werner (Halle, DE)|
|Assignee:||Asta Pharma Akteingesellschaft (Frankfurt am Main, DE)|
Patent Claim Types:|
see list of patent claims
|Compound; Process; Formulation; Composition;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|Germany||3707154||Mar 06, 1987|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Finland||881020||<disabled in preview>|
|European Patent Office||0281832||<disabled in preview>|
|Denmark||168822||<disabled in preview>|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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