Solvate of cefadroxyl

Details Solvate of cefadroxyl Solvate of cefadroxyl

1989-03-13

1990-10-09

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D50122

Patent

active

049621955

ABSTRACT:
The invention relates to a novel crystalline cefadroxyl hemihydrate having a K.F. between about 3.5 and 2.0%: such compound is more stable than other cefadroxyl molecules.
The novel cefadroxyl is obtained preparing and isolating a novel cefadroxil solvate of dimethylacetamide, or of N-methyl-2-pyrrolidone or of monomethylformamide, slurrying said solvate with a mixture methanol/isopropyl alcohol 30:70 to 50:50 by volume at a temperature of about +45.degree. C. to +55.degree. C. and then filtering the so obtained compound.

REFERENCES:
patent: 4504657 (1985-03-01), Marsili
Chemical Abstracts vol. 96 74631k (1982).

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