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1 School of Pharmacy, University of California Medical Center, San Francisco, California
The kinetic constants defining the rate of acetylation of sulfisoxazole, the rate of elimination of acetylsulfisoxazole and the rate of elimination of unchanged sulfisoxazole following the oral ingestion of this drug were calculated by following the excretion of this drug in the free and acetylated form. Experimental values were in excellent agreement with theoretical values calculated by an equation developed to account for the various processes involved in the transformation and excretion of sulfisoxazole.
Submitted on December 18, 1959