125I-Cgtyr 67319-56-6 Chol-gly-tyr Cholyl-glycyl-tyrosine Cholylglycyltyrosine I-Cholylglycyltyrosine L-Tyrosine, N-(N-(3alpha,5beta,7alpha,12alpha)-3,7,12-trihydroxy-24-oxocholan-24-yl)glycyl-