D002077Chemicals & DrugsD03.132.577.249.165D03.549.686.165D03.605.497.165D04.615.723.795.165Butorphanolprns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:meshTreeNumberMeSH tree numberrdf:typetyperdfs:labellabelConcept