5,7-dimethyl-2-ethyl-3-[(4-hydroxy-3,5-dipropylphenyl)methyl]-3H-imidazo[4,5-b]pyridine

3-[4-tert-butyldimethylsilyloxy-3,5-dipropylphenylmethyl]-5,7-dimethyl-2-ethyl-3H-imidazo -[4,5-b]-pyridine

苯乙酸甲酯

扁桃酸乙酯