Compounds in which one or more of the OH groups of phosphoric acid have been replaced with an amino or substituted amino group; commonly confined to the phosphoric triamides, P(=O)(NR2)3, since replacement of one or two OH groups produces phosphoramidic acids: P(=O)(OH)(NR2)2 , P(=O)(OH)2(NR2). NOC Rule D-5.62.
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