Amidines are a class of oxoacid derivatives. The oxoacid from which an amidine is derived must be of the form RnE(=O)OH, where R is a substituent. The −OH group is replaced by an −NH2 group and the =O group is replaced by =NR, giving amidines the general structure RnE(=NR)NR2. ==Carboxamidines== When the parent oxoacid is a carboxylic acid, th...
The monovalent radical -C(NH)-NH2. ... (05 Mar 2000) ... 
Type: Term Pronunciation: am′i-dēn Definitions: 1. The monovalent radical —C(NH)-NH2.
any of a group of compounds containing the CNH group, some of which have marked pharmacological action.