Any advice on stock solution preparation of 1-DL-Methyl Tryptophan?

Has anyone worked with 1-DL-Methyl Tryptophan? I am facing a problem with stock preparation of 1-DL-MT. The problem is a precipitation issue as soon as the pH of 0.1 N NaOH (having 1-MT; pH-10.5)...

26 November 2013 2,171 3 View