Antimycin 
Female rats from the Holtzman strain were fed diets containing 
tritiated-antimycin. It was estimated that less than 15% of the total 
radioactivity in the urine was due to intact antimycin. Fractionation 
studies indicated that urinary metabolites could be subdivided: (1) 
Non-volatile 80%, volatile 20% --probably H3-water; (2) Neutral, 15% of 
non-volatile--may or may not include intact antimycin; (3) Acidic plus 
neutral, 89% of non-volatile--products derived from aromatic portion of 
molecule but not containing basic nitrogen; up to 15% of this fraction 
possibly consisting of blastmycic acid; (4) highly water-soluble material, 
11% of non-volatile (1213). 
42 

