Figure 4From: Separation of ursodeoxycholic acid by silylation crystallizationThe HPLC spectrum of the product and standard spectrum of UDCA. Mobile phase was a mixture of acetonitrile and phosphate acid buffer (pH 3.0) with a volume ratio of 50:50 at a flow rate of 1.0 ml/min at 25°C. (a) Standard UDCA and (b) product.Back to article page