(2) R. Adams and RH Mattson, THIS JOURNAL, 76, 1925 (1954).(3) R. Adams and KV Y. Sundstrom, ibid., 76, 5474 (1954).(4) R. Adams and HH Gibbs, ibid., 19, 170 (1957). fornia Fellow, 1955-1957. m-substituted benzyl groups attached to the 3-position of N- benzenesulfonyl-N-carboxymethyl-mesidine (I) has previously been studied. j+ pparently there is little variation of optical stability with change in field. The minimum and maximum ...