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- Word comparison: carbonyl vs. carboxyl
carbonyl vs. carboxyl
carbonyl vs. carboxyl: What's the difference?
Carbonyl describes a chemical group that consists of one atom of carbon double bonded to one atom of oxygen. It occurs in acids, ketones, aldehydes, and their derivatives. Carboxyl describes a chemical group that consists of a carbonyl and a hydroxyl bonded to each other. It is found in, and characteristic of, organic acids.
adjective
- containing the carbonyl group. 
noun
- a compound containing metal combined with carbon monoxide, as nickel carbonyl, Ni(CO) 4 . 
adjective
- containing the carboxyl group.