1.外观：白色或类白色粉末。

Appearance: White or almost white crystalline powder.

2.溶解度：几乎不溶于水,可溶于酒，易溶于二甲亚砜,微溶于二氯甲烷。

Solubility: Practically insoluble in water, soluble in alcohol，freely soluble in dimethyl sulfoxide, slightly soluble in methylene chloride.

3.气味：微有气味。

Smell: Slightly smelly.

4.结构特性:他达结构的有效部分，还有另外的侧链和配体的化合物.

Structure  character：This compound is effective section of structure of tadalafil with a side chian.