The title compound 17(S)-methyl-13β-hydroxyl-14(R),20(S)-epoxy-pregn-4-en-3-one was synthesized by an improved tandem reaction, and its structure was determine
The chelate complex of Cu2+ with 2-hydroxy-(4-methylthio)butanoate(MHA-H, the anion derived from the so-called methionine hydroxy-analogue, largely used in anim