Cholic acid (CAS: 81-25-4) is a primary bile acid with the chemical formula C₂₄H₄₀O₅ and molecular weight 408.58 g/mol. As a key component of bile (constituting 40% of human bile acids), it plays essential roles in fat emulsification and cholesterol homeostasis. The 2023 European Association for the Study of the Liver (EASL) guidelines recognize serum cholic acid levels as important diagnostic markers for cholestatic disorders (normal range: 0.1-1.0 μmol/L).
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