Chemical structures of the four compounds, astragaloside IV (AGS-IV), 6-<i>O</i>-<i>β</i>-<i>D</i>-glucopyranosyl cycloastragenol (6-<i>O</i>-<i>β</i>-<i>D</i>-glu CAG), 3-<i>O</i>-<i>β</i>-<i>D</i>-xylopyranosyl cycloastragenol (3-<i>O</i>-<i>β</i>-<i>D</i>-xyl CAG), cycloastragenol (CAG).

<p>Chemical structures of the four compounds, astragaloside IV (AGS-IV), 6-<i>O</i>-<i>β</i>-<i>D</i>-glucopyranosyl cycloastragenol (6-<i>O</i>-<i>β</i>-<i>D</i>-glu CAG), 3-<i>O</i>-<i>β</i>-<i>D</i>-xylopyranosyl cycloastragenol (3-<i>O</i>-<i>β</i>-<i>D</i>-xyl CAG), cycloastragenol (CAG).</p>