© Niklas Bildhauer , CC BY-SA 2.0 Article / January 01, 1992 Trapidil, a triazolopyrimidine, competes only moderately with A1-adenosine receptor binding sites from brain and heart View in MDC Repository Authors H. Tenor S. Bartel E.G. Krause Journal Pharmaceutical and Pharmacological Letters Citation 2: 47-49 View in MDC Repository