Study will evaluate the efficacy of a new compound versus placebo in the treatment of patients with schizophrenia (diagnosed by DSM-IV criteria) as measured by reductions from baseline on the total score of the Brief Psychiatric Rating Scale (BPRS) as extracted from the Positive and Negative Syndrome Scale (PANSS).
Inclusion Criteria: * Satisfy DSM-IV criteria for schizophrenia as established by SCID-CV * The patient must agree to a voluntary hospitalization duration of 31 days minimum at the start of the treatment * If female, must not be pregnant, or must be incapable of conceiving or be taking steps to prevent conception Exclusion Criteria: * The patient has used an investigational drug within the past 30 days * The patient has participated in a previous study of this compound
are designated in this study
of being blinded to the placebo group