FIELD: biochemistry. SUBSTANCE: method involves addition of anthraquinone-1,5-disulfoacid or its salt in combination with alkaline metal to a reaction mixture of an enzymatic acylation followed by if necessary acidification with hydrochloric acid to isolate cefaclor/anthraquinone salt-1,5- -disulfoacid at ratio 1:2. EFFECT: improved effectiveness of isolation, decreased cost of a procedure. 9 cl, 1 tbl, 3 ex
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