CLARK, J H Antihistamine agents; substituted N,N-dimethyl-N'-(2-pyridyl)-N'-thenylethylenediamines as antihistamine agents. [electronic resource] - The Journal of organic chemistry Mar 1949 - 216-27 p. digital Publication Type: Journal Article ISSN: 0022-3263 Standard No.: 10.1021/jo01154a005 doi Subjects--Topical Terms: HistamineHistamine AgentsHistamine Antagonists