2-Amino-2-carboxy-bicyclo-2,2,1-heptane 2-Aminobicyclo(2,2,1)heptane-2-carboxylic acid 2-Aminonorbornane-2-carboxylic acid 20448-79-7 33889-51-9 33889-52-0 33889-53-1 Bicyclo(2.2.1)heptane-2-carboxylic acid, 2-amino- b-BCH