Process for preparing loracarbef monohydrate

Details Process for preparing loracarbef monohydrate Process for preparing loracarbef monohydrate

1995-03-01

1996-12-03

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D48704

Patent

active

055809774

ABSTRACT:
The invention is directed to a crystalline anhydrate solvate of loracarbef, and also is directed to a process for preparing a crystalline monohydrate form of the compound of formula (I) ##STR1## which comprises drying a crystalline isopropanolate form of the compound of formula (I) at a temperature of from about 50.degree. C. to about 100.degree. C. to provide a crystalline anhydrate form of the compound of formula (I); and exposing the crystalline anhydrate form of the compound of formula (I) to a relative humidity of from about 90 to about 100%.

REFERENCES:
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patent: 3531481 (1970-09-01), Pfeiffer
patent: 4775751 (1988-10-01), McShane
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patent: 5352782 (1994-10-01), Nist et al.
patent: 5374719 (1994-12-01), Plocharczyk et al.
patent: 5399686 (1995-03-01), Henning et al.
Chemical Abstracts, vol. 116, No. 22, 1 Jun. 1992, Abstract No. 221407d.
Chemical Abstracts, vol. 119, No. 26, 27 Dec. 1993, Abstract No. 285163r.

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