@leonqli and me created this term, because all the subject under clinical trials are called investigational, such as investigational new drug, investigational device, etc.. This term is used for covering investigational molecular entity that could cover the investigational drugs, vaccines, dietaries, etc. for PubChem's use case.
http://purl.obolibrary.org/obo/CTO_0000108
@leonqli and me created this term, because all the subject under clinical trials are called investigational, such as investigational new drug, investigational device, etc.. This term is used for covering investigational molecular entity that could cover the investigational drugs, vaccines, dietaries, etc. for PubChem's use case.