"3,7-dioxo-5?-Cholan-24-oic acid; 3,7-dioxo-5?-Cholanic acid; (5?)-3,7-Dioxocholan-24-oic acid; (-)-3,7-Dioxo-5?-cholanic acid; 3,7-Di-keto-5?-Cholan-24-oic acid; 3,7-Diketo-5?-cholanic acid; 3,7-Diketochenodeoxycholic acid; 3,7-Dioxo-5?-cholan-24-oic acid; 3,7-Dioxo-5?-cholanic acid; 3,7-Dioxo-5?-cholic acid; dehydro-Chenodeoxycholic acid; Dehydrochenodeoxycholic acid; 3,7-dioxo-CDCA (diketo impurity)",Chenodeoxycholic acid Impurity