Process for the crystallisation of guandinium salts

Details Process for the crystallisation of guandinium salts Process for the crystallisation of guandinium salts

2004-04-10

2009-12-08

Kumar, Shailendra (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S237000, C564S163000, C564S164000, C548S561000, C544S392000, C544S393000

Reexamination Certificate

active

07629493

ABSTRACT:
The invention relates to a process for the crystallization of the compounds of the formula (I) or acid-addition salts thereof, in which R1, R2and R3have the meaning indicated in Claim1.

REFERENCES:
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patent: 5744641 (1998-04-01), Gericke et al.
patent: 5840761 (1998-11-01), Baumgarth et al.
patent: 6147098 (2000-11-01), Mogensen et al.
patent: 6673968 (2004-01-01), Gericke et al.
patent: 0 758 644 (1997-02-01), None

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