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Iminodiacetic acid, HN(CH2CO2H)2, often abbreviated to IDA, is a dicarboxylic acid amine (the nitrogen atom forms a secondary amino group, not an imino group as the name suggests).
I 1212 (OTTO) Iminodiacetic acid, 98% Cas no 142-73-4 - used in capillary electrophoresis for modulating peptide mobility.