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imino-group
imino-group n. 
/ˈɪmənoʊˌɡrup/ the group NH as it occurs in imines (in quot. 1906 it denotes what is more correctly called an imido-group).
Brit. /ɪˈmiːnəʊɡruːp/
, /ɪˈmiːnəʊɡruːp/U.S. /ᵻˈminoʊˌɡrup/
, /ᵻˈminoʊˌɡrup//ˈɪmənoʊˌɡrup/ΘΚΠ
the world > matter > chemistry > organic chemistry > imides or imines > [noun] > imino-group
imino-group1906
1906 Jrnl. Chem. Soc. 89 ii. 1837 The members of the former class contain the grouping CONH·CO·NH·CO·, whereas in no member of the latter class is this grouping present... Each of the imino-groups contained in the above-mentioned grouping, being connected with two carbonyl groups, will be possessed of acidic properties.
1966 T. Z. Nowakowski & A. J. Clarke tr. V. Kretovich Princ. Plant Biochem. (ed. 4) i. 16 Proline, strictly speaking, is not an amino acid, as it contains an imino group (NH).
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