Process for preparing pure cefamandole from alkali metal and amm

Details Process for preparing pure cefamandole from alkali metal and amm Process for preparing pure cefamandole from alkali metal and amm

1977-09-19

1978-09-19

Rizzo, Nicholas S.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D50112

Patent

active

041156447

ABSTRACT:
Passing a solution, buffered to a pH of from about 3.5 to about 4.5, of an alkali metal or ammonium salt of cefamandole through a bed of an adsorbent resin depending on van der Waals forces for adsorption followed by acidification to a pH of about 2.0 with a non-oxidizing inorganic acid yields pure crystalline cefamandole, which can be separated and dried, or partitioned into a preferential solvent from which crystalline sodium cefamandole can be recovered.

REFERENCES:
patent: 3947415 (1976-03-01), Tensmeyer
patent: 4028355 (1977-06-01), Blackburn
patent: 4029655 (1977-06-01), Cise

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