Methyl-D-Penicillamine

Methyl-D-Penicillamine is the D-enantiomer of the methylated analog of Penicillamine, featuring a thiol group (-SH) and a methyl-substituted α-amino functionality. Its structure comprises a β-lactam ring fused to a thiazoline ring, with the amino group methylated at the N-terminus. This compound arises as a stereospecific degradation byproduct during Penicillamine synthesis or storage. It serves as a chiral reference standard for HPLC enantioselective analysis of Penicillamine-related impurities.