| http://www.w3.org/ns/prov#value | - nts, when x=2, the alkyl groups, taken together with the nitrogen to which they are attached, optionally form a cyclic ring system. ???Dialkylamino??? refers to a ???N(alkyl)2 group, where alkyl is as defined herein.The term ???aromatic??? refers to a planar ring having a delocalized ??-electron system containing 4n+2?? electrons, where n is an integer.
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