Tadalafil

Tadalafil (CAS 171596-29-5, EC 687-782-2) is a pharmaceutical compound known commercially as Cialis and in development literature as IC-351 or IC351. It belongs to the class of PDE5 inhibitors and is classified as a pharmaceutical intermediate for industrial supply purposes. No E-code designation applies to this substance.

In pharmaceutical formulations, tadalafil functions as an active intermediate targeting phosphodiesterase type 5 enzyme inhibition, supporting downstream drug manufacturing workflows. In personal care applications, it is documented as a skin conditioner and antioxidant, where its stabilising properties help protect formulations against oxidative degradation.

Tadalafil is supplied as a white to off-white crystalline powder meeting pharmaceutical-grade specifications aligned with Ph.Eur. and relevant REACH compliance requirements. It is classified under HS code 2934990002. Procurement quantities and packaging formats are available on request through standard B2B supply channels serving European markets.