Direct Red 80 is a tetra azo dye. It can be used to detect amyloid and can magnify the usual birefringence of collagen fibers in tissue sections.

Citronellal is a monoterpene predominantly formed by the secondary metabolism of plants producing antithrombotic antiplatelet and antihypertensive activities.

Allosteric antagonist of P2Y1 (EC50 = 0.06-0.3 μM). Non-nucleotide ligand. Binds receptor outside of the helical bundle.