SHEET /m/tadalafil · PubChem CID 110635 · CAS 171596-29-5 · REV 2026.07
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Tadalafil
from sourceC22H19N3O4 · 389.4 g/mol
Cialis
What is Tadalafil?
The PDE5 inhibitor sold as Cialis, used for erectile dysfunction, enlarged prostate and pulmonary hypertension. It lasts far longer than sildenafil. from source
CategoryPrescription medicine
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Fig. 1 · 2D structure RDKit
SMILES
CN1CC(=O)N2[C@@H](C1=O)CC3=C([C@H]2C4=CC5=C(C=C4)OCO5)NC6=CC=CC=C36Where you'll find it
Dispensed on prescription, not sold on a shelf. See the rest of the prescription medicine group.
Toxicity & hazards
WarningIrritantH302, H312, H315, H319, H332, H335from source