Thiothixene (sold as Navane®) is a thioxanthene drug used as a typical antipsychotic medication. It is a thioxanthene derivative and is the cis isomer of N,Ndimethyl- 9-* thioxanthene-2-sulfonamide.
Although widely used in the treatment of schizophrenia for several decades, thiothixene is seldom used today in favor of atypical antipsychotics such as olanzapine.
Antipsychotics :: Drugs and Medications

Thiothixene - Internet Mental Health page covers pharmacology, indications and contraindications, warnings, dosage, adverse effects, and other topics. From a Canadian monograph.
Thiothixene - Familydoctor.org - Information for patients in English and Spanish.