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Abstract
1. The disposition of [14C]coralyne sulphoacetate has been examined in the mouse and rat at three dose levels.
2. In both species the major route of excretion is biliary following either intraperitoneal or intravenous administration. In rats, 18—42% of the 14C is eliminated in the bile in the first 24 h and only 1–2% in the urine. Transport into bile appears to be active and the transport system saturable at the doses employed.
3. The majority of the biliary 14C in the rats is unchanged parent compound and a minority is associated with a metabolite. The maximum amount of metabolite is 12% at 10–30 min following the administered dose.
4. The initial plasma decay of [14C]coralyne following intravenous administration is rapid. Half-life values are 12.3, 16.2 and 21.4 min after doses of 13, 26 and 52 mg/kg respectively.
5. No sex differences were found in the rat in the parameters studied.
