the pfb esters were further derivatized to the dimethylethylsilyl ( dmes ) ethers , whereby lithocholic acid , deoxycholic acid , chenodeoxycholic acid , ursodeoxycholic acid and cholic acid were distinctly separated by gc on a cross-linked methyl silicone fused-silica capillary column .
C0011479
deoxycholic acid
C0008024
chenodeoxycholic acid