Molecular Formula: C
20H
22ClNO
4 Molecular Weight: 375.84598
InChIKey: UOTMYNBWXDUBNX-UHFFFAOYSA-N
An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
From: MeSH