59-53-0 BRN 2327356 EINECS 200-434-2 N-Acetyl-3-mercapto-DL-valine N-Acetyl-3-mercaptovaline N-Acetyl-D,L-penicillamine N-Acetyl-dl-penicillamine N-Acetylpenicillamine USAF HJ-2 Valine, N-acetyl-3-mercapto-, DL-