1,4a-dimethyl-7-(prop-1-en-2-yl)-1,2,3,4,4a,4b,5,6,10,10a-decahydrophenanthrene-1-carboxylic acid belongs to the class of organic compounds known as diterpenoids. These are terpene compounds formed by four isoprene units. 1,4a-dimethyl-7-(prop-1-en-2-yl)-1,2,3,4,4a,4b,5,6,10,10a-decahydrophenanthrene-1-carboxylic acid is a weakly acidic compound (based on its pKa).