Tadalafil

Tadalafil is a potent inhibitor of phosphodiesterase 5 (PDE5, IC50 = 1.2 nM). It is selective for PDE5 over PDE1-4 and 7-10 (IC50s = 9.2-280 µM), however, it does also inhibit PDE11 (IC50 = 11 nM). In vivo, tadalafil (10 mg/kg) decreases production of the proinflammatory cytokines TNF-alpha, IL-1beta, and IL-6 and improves renal function in a rat model of ischemia/reperfusion injury. It also reduces development of tobacco smoke-induced emphysema and pulmonary hypertension in mice. Formulations containing tadalafil have been used to treat erectile dysfunction, pulmonary arterial hypertension, and lower urinary tract dysfunction.Formal Name: (6R)-6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12aR-hexahydro-2-methyl-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione. CAS Number: 171596-29-5. Molecular Formula: C22H19N3O4. Formula Weight: 389.4. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 25 mg/ml, DMF:PBS (pH 7.2) (1:1): 0.5 mg/ml, DMSO: 20 mg/ml. lambdamax: 221, 284, 292 nm. SMILES: O=C1N(C)CC(N2[C@H](C3=CC=C(OCO4)C4=C3)C5=C(C6=CC=CC=C6N5)C[C@@]21[H])=O. InChi Code: InChI=1S/C22H19N3O4/c1-24-10-19(26)25-16(22(24)27)9-14-13-4-2-3-5-15(13)23-20(14)21(25)12-6-7-17-18(8-12)29-11-28-17/h2-8,16,21,23H,9-11H2,1H3/t16-,21-/m1/s1. InChi Key: WOXKDUGGOYFFRN-IIBYNOLFSA-N.