2-[2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethoxy]ethanol FuMarate

2-[2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethoxy]ethanol is an impurity of Quetiapine (Q510000), an atypical antipsychotic agent used for the treatment of patients with schizophrenia, biopolar disorder and to treat major depressive disorder.