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An aminal or aminoacetal is a functional group or type of chemical compound that has two amine groups attached to the same carbon atom: -C(NR2)(NR2)-. (As is customary in organic chemistry, R can represent hydrogen or an alkyl group.)
Hemiaminal ethers are also sometimes called aminals although it is discouraged by the IUPAC. They have the following structure: R‴-C(NR'2)(OR")-R⁗. The glycosylamines are examples of cyclic hemiaminal ethers.
Aminal is also a misspelling and mispronunciation of animal.