MW 389 Da, Purity >98%. Potent, selective 5-HT7 receptor antagonist (pKi values are 8.3, 7.2 and 6.0 for 5-HT7A, 5-HT5A and 5-HT1B receptors, respectively). Also potently blocks α2 adrenoceptors. Blocks amphetamine and ketamine induced hyperactivity. Brain penetrant *in vivo*.
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