norbornene|N-Hydroxy-5-norbornene-2,3-dicarboxylic acid imide(HONB)|C9H9NO3|21715-90-2|C9H9NO3|HONB|N-Hydroxy-5-norbornene-2,3-dicarboxylic acid imide|Hydroxy|norbornene|dicarboxylic acid|Hydroxy norbornene|carboxylic acid|Peptide|Reagents and Linkers|21715-90-2