N-Desmethylclozapine (NDMC), a major metabolite of clozapine , has been found to act as an antagonist of phosphoinositide hydrolysis stimulated by serotonin receptors. NDMC has been shown to be a potent antagonist of SR-2C (aka: 5HT2C), and has been reported to act as a moderate agonist of the rat native and human recombinant mAChR M1(CHRM1). N-Desmethylclozapine is an activator of D2DR and D3DR.A metabolite of clozapine and neurotransmitter N-Desmethylclozapine (NDMC), a major metabolite of clozapine , has been found to act as an antagonist of phosphoinositide hydrolysis stimulated by serotonin receptors. NDMC has been shown to be a potent antagonist of SR-2C (aka: 5HT2C), and has been reported to act as a moderate agonist of the rat native and human recombinant mAChR M1(CHRM1). N-Desmethylclozapine is an activator of D2DR and D3DR. A metabolite of clozapine and neurotransmitter