Tadalafil171596-29-5100 % similar Aminotadalafil385769-84-679 % similar Methyl (1R,3R)-1-(1,3-benzodioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-B]indole-3-carboxylate171596-41-149 % similar 3′,4′-Methylenedioxymandelic acid27738-46-132 % similar 1-Methyl-1,2,3,4-tetrahydro-β-carboline-3-carboxylic acid5470-37-132 % similar Boc-D-1,2,3,4-tetrahydronorharman-3-carboxylic acid123910-26-931 % similar (+)-Evodiamine518-17-231 % similar