A Certified Solution Standard for the primary active metabolite of quetiapine, marketed as the atypical antipsychotic Seroquel? for the treatment of depression, bipolar disorder, and schizophrenia. This new reference standard is suitable for a variety of GCMS and LCMS applications from forensic and forensic toxicology analyisis to urine drug testing. We also offer certified Snap-N-Shoot? solutions of the parent drug Quetiapine fumarate (Q-001) and the internal standard Quetiapine-D8 hemifumarate (Q-002) as well as a wide selection of other atypical antipsychotics and their metabolites and internal standards, such as aripiprazole, clozapine, risperidone, olanzapine, and ziprasidone.