Three mice were administered a single IP dose of 11a-1 at 10 mg/kg. At different time points (1 hour, 3 hours, 6 hours, 9 hours and 24 hours), blood samples (50 μl) from each mouse were collected and mixed with EDTA (50 mM, 50 μl). The samples were then mixed with 200 μl acetonitrile and centrifuged at 21,100 g for 5 minutes. The supernatants were collected and subjected to liquid chromatography/mass spectrometry analysis.
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