prov:value
| - up, di(C1-C6)alkylguanidino groups, hydrazino, (C1-C6)alkyl hydrazino groups, (C1-C6)alkoxyamino and hydroxylamino groups, which may optionally be substituted; carboxylic acid or its derivatives such as amides, like CONH2, alkylaminocarbonyl like MeNHCO, Me2NCO, EtNHCO, Et2NCO, arylaminocarbonyl like PhNHCO, NapthNHCO and the like, which may be substituted; aralkylaminocarbonyl such as PhCH2NHCO,
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