neuroleptics such as thioxanthenes ( cis ( z ) -flupentixol and cis ( z ) -clopenthixol ) and phenothiazines ( fluphenazine and perphenazine ) , which block both dopamine ( da ) d-1 and d-2 receptors and the butyrophenones ( haloperidol and spiroperidol ) , which block d-2 receptors only , are equipotent both behaviorally and clinically .
C0039961
thioxanthenes
C0009026
clopenthixol