EdSmith77

EdSmith77 t1_jd8hyzy wrote

If I understand your question, the group formed between the amine and carboxyl group with loss of a water molecule is called an amide. (I tried to parse what you meant by "new groups", and "C=O left from the carboxyl group"). The "C=O left from the carboxyl group" is part of the new group ("amide").

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