Vincamine1617-90-9100 % similar (-)-Eburnamonine4880-88-059 % similar Vinpocetine42971-09-548 % similar Catharanthine2468-21-535 % similar Catharanthine tartrate4168-17-633 % similar Methyl α-cyclopentyl-α-hydroxybenzeneacetate19833-96-631 % similar Methyl α-cyclohexyl-α-hydroxybenzeneacetate10399-13-030 % similar