Icariin is a flavonol glycoside compound derived from plants of the Epimedium genus. It functions as a phosphodiesterase-5 (PDE5) inhibitor and is considered the primary active constituent of the Chinese herbal remedy Herba Epimedii (yinyanghuo).
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CAS 489-32-7
5-hydroxy-2-(4-methoxyphenyl)-8-(3-methylbut-2-enyl)-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxychromen-4-one
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