IT is well known that many benzenoid compounds containing a COOH- or OH-group ortho to another group capable of forming an internal hydrogen bond do not exhibit the normal OH-band found in simple ...
IT is said that cupric ions accelerate the autoxidation of 3,4-dihydroxyphenylalanine (dopa) 1 and, on the other hand, that they combine with pterins, riboflavin, amino-acids and other organic ...
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