Ammonia → Flunixin

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

About 300 g of Resflor® is added over about 1 hour to a stirring solution of about 24 mL of concentrated ammonia in about 3 L of water heated to about 50° C. Additional concentrated ammonia can be added to ensure that the pH is about 9. The mixture is stirred and cooled to room temperature. The resulting precipated Florfenicol is removed by filtration. The filtrate is acidifed to about pH 4.5 with 10% H2SO4 then stirred for about another 1 hour. The resulting precipitated Flunixin is collected by filtration then dried to a moisture content of less than about 1% to yield about 4 g of crude Flunixin (100%).

Herkunft & Nachweise