Has_Free_Acid_Or_Base_Form_Association http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#Has_Free_Acid_Or_Base_Form_Association Used to associate the salt form of a drug with its free acid or free base. SubClass rdfs:subClassOf NCI_Thesaurus_Association http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#NCI_Thesaurus_Association class rdfs:label Has_Free_Acid_Or_Base_Form Display_Name Has Free Acid Or Base Form DesignNote The free acid or base is responsible for the drug's therapeutic effect. Hence, the salt form of a drug has the same mechanism of action as the free acid or base form. Legacy Concept Name Has_Free_Acid_Or_Base_Form_Association code C49123 SuperClass NCI_Thesaurus_Association http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#NCI_Thesaurus_Association Association An association is a non-hierarchical, named relationship between a source and target concept that does not affect classification and is not inherited by child concepts during classification. Associations are bidirectional and have a stated inverse. Unlike roles, associations do not have a domain or range. SubClass rdfs:subClassOf NCI_Thesaurus_Entity http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#NCI_Thesaurus_Entity class rdfs:label NCI Thesaurus Association Legacy Concept Name NCI_Thesaurus_Association FULL_SYN Association code C43646 DEFINITION An association is a non-hierarchical, named relationship between a source and target concept that does not affect classification and is not inherited by child concepts during classification. Associations are bidirectional and have a stated inverse. Unlike roles, associations do not have a domain or range. InstanceCount 0 RdfType ChildCount 11 Semantic_Type Conceptual Entity UMLS_CUI C1704770 Preferred_Name NCI Thesaurus Association class DEFINITION Used to associate the salt form of a drug with its free acid or free base. InstanceCount 0 RdfType ChildCount 0 Semantic_Type Conceptual Entity UMLS_CUI C1708325 Preferred_Name Has_Free_Acid_Or_Base_Form class