Name: Phosphodiesterase 5A Inhibitors (IC50, Ki)
Creator: AAT Bioquest
License: https://www.aatbio.com/tou.html

Phosphodiesterase 5A Inhibitors (IC50, Ki)

Structure	Compound Name	Standard Type	Standard Values (in nM)
	Sildenafil	IC50	3.6 ^[1]
	Sildenafil	Ki	1.6 ^[1], 1.87 ^[2], 1.91 ^[3], 10.0 ^[4]
	Tadalafil	IC50	4.0 ^[1]
	Tadalafil	Ki	5.2 ^[1], 10.0 ^[2]
	Zaprinast	IC50	1000.0 ^[1]
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References

This online resource may be cited as follows

MLA	"Quest Database™ Phosphodiesterase 5A Inhibitors (IC50, Ki)." AAT Bioquest, Inc., 5 Dec. 2025, https://www.aatbio.com/data-sets/phosphodiesterase-5a-inhibitors-ic50-ki.
APA	AAT Bioquest, Inc. (2025, December 5). Quest Database™ Phosphodiesterase 5A Inhibitors (IC50, Ki). AAT Bioquest. https://www.aatbio.com/data-sets/phosphodiesterase-5a-inhibitors-ic50-ki.
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