SEARCH Articles Figures Tables 3- Penten-2-one, 4-substituted amino 4-p-toluidino-, and its 3- Penten-2-one, 4-substituted amino Cr chelates 3- Penten-2-one, 4-substituted amino chromium derivative 3- Penten-2-one, 4-substituted amino derivatives of, and their Amino substitution