derives from chlorinated tyrosine (37)Cl labeled 3',5'-dichlorotyrosine 234.9794769287109375 235.089996337890625 71.9161529541015625 71.9199981689453125 MOD:00990 PSI-MOD Y H -2 (37)Cl 2 none C 9 H 7 N 1 O 2 (37)Cl 2 artifact From DeltaMass: Average Mass: 72 modification from DeltaMass 3',5'-dichloro-L-tyrosine