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|Title:||Method for dissolving arginineamides and pharmaceutical compositions containing them|
|Abstract:||A method for dissolving an arginineamide of the invention comprising dissolving N.sup.2 -arylsulfonyl-L-arginineamide having the general formula (I) ##STR1## wherein R.sup.1 represents a (2R, 4R)-4-alkyl-2-carboxypiperizino group and R.sup.2 represents a phenyl group or a condensed polycyclic compound residue which may be substituted with one or more substituents selected from lower alkyl groups, lower alkoxy groups and lower alkyl-substituted amino groups, said condensed polycyclic compound residue including a benzene ring which binds to sulfur atom of the sulfonyl group in the general formula (I) and is condensed with one or more other rings which may be heterocyclic and having 7 to 14 carbon atoms as the ring-constituent atoms; and/or its salt in a solvent of alcohol and water is disclosed herein. And, the pharmaceutical composition comprising N.sup.2 -arylsulfonyl-L-arginineamide having the general formula (I), an alcohol and water is disclosed herein.|
|Inventor(s):||Ofuchi; Kunihiko (Hasaki, JP), Nomura; Tatsuo (Hasaki, JP)|
|Assignee:||Mitsubishi Kasei Corporation (Tokyo, JP)|
1. A method for dissolving an arginineamide, comprising:
dissolving N.sup.2 -arylsulfonyl-L-argininamide represented by formula (I): ##STR3## and/or its salt in a solvent containing ethanol, water and a saccharide.
2. The method according to claim 1, wherein the saccharide is at least one member selected from the group consisting of sorbitol, glucose, glycerin and sucrose.
3. A pharmaceutical composition for injection, comprising:
N.sup.2 -arylsulfonyl-L-argininamide represented by formula (I): ##STR4## and/or its salt together with ethanol, water and a saccharide.
4. The composition according to claim 3, wherein the saccharide is at least one member selected from the group consisting of sorbitol, glucose, glycerin and sucrose.
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