Yohimbine

Synonyms: Yohimbin, Johimbine, Yohimbinum, Quebrachin, Aphrodin, Corynine, Yohimvetol, Hydroergotocin.

Chemical name: 17-alpha-hydroxy-yohimban-16-alpha-carboxylic acid methyl ester

Chemical formula: C₂₁H₂₆N₂O₃.

Molecular weight: 354.44 g/mol (free base, commercially available as its hydrochloride salt with a molecular weight of 390.90 g/mol).

Molecular structure:

See also: Chemical data (German).

Alkaloid from the bark of the West-African tree Pausinystalia yohimbe Pierre (formerly Corynanthe yohimbe), family Rubiaceae (Madder family) (see [1] and [1]).

Yohimbine is a selective competitive alpha2-adrenergic receptor antagonist and is used for treating erectile dysfunction.

For a good review read this German article.