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Name |
Tadalafil |
Synonyms |
Tildenafil; (6R,12aR)-6-(1,3-benzodioxol-5-yl)-2-methyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6] pyrido[3,4-b]indole-1,4-dione;Cialis;(6R,12aR)-6-(benzo[d][1,3]dioxol-5-yl)-2-methyl-2,3,12,12a tetrahydropyrazino [1',2':1,6] pyrido[3,4b] indole1,4(6H,7H)-dione |
Molecular Formula |
C22H19N3O4 |
Molecular Weight |
389.40400 |
CAS Number |
171596-29-5 |
purity |
≥98% |
Storage conditions |
Sealed in dry,2-8°C |
Application:Tadalafil (CAS No.: 171596-29-5) is a PDE5 inhibitor marketed in pill form for treating
erectile dysfunction (ED) under the name Cialis, and under the name Adcirca for
the treatment of pulmonary arterial hypertension. In October 2011 the U.S. Food
and Drug Administration (FDA) approved Cialis for treating the signs and
symptoms of benign prostatic hyperplasia (BPH) as well as a combination of BPH
and erectile dysfunction (ED) when the conditions coincide. It initially was
developed by the biotechnology company ICOS, and then again developed and
marketed world-wide by Lilly ICOS, LLC, the joint venture of ICOS Corporation
and Eli Lilly and Company. Cialis tablets, in 2.5mg, 5mg, 10mg, and 20mg doses,
are yellow, film-coated, and almond-shaped. The approved dose for pulmonary
arterial hypertension is 40mg (two 20-mg tablets) once daily.
Tadalafil is also manufactured and sold under
the name of Tadacip by the Indian pharmaceutical company Cipla in doses of 10mg
and 20mg.
On November 21, 2003 the FDA approved tadalafil
(as Cialis) for sale in the United States as the third ED prescription drug
pill (after sildenafil citrate (Viagra) and vardenafil Hydrochloride
(Levitra)). Like sildenafil and vardenafil, tadalafil is recommended as an 'as
needed' medication. Cialis is the only one of the three that is also offered as
a once-daily medication.
Moreover, tadalafil was approved in May 2009 in
the United States for the treatment of pulmonary arterial hypertension and is
under regulatory review in other regions for this condition. In late November
2008, Eli Lilly sold the exclusive rights to commercialize tadalafil for
pulmonary arterial hypertension in the United States to United Therapeutics for
an upfront payment of $150 million.