5.1.1.4 0.217 - pyrrole-2-carboxylate pH 8.0, 50°C 5.1.1.4 0.269 - pyrrole-2-carboxylate pH 8.0, 50°C 5.1.1.4 0.295 - pyrrole-2-carboxylate pH 8.0, 50°C 5.1.1.4 0.58 - pyrrole-2-carboxylate pH 8.0, 50°C 5.1.1.4 67 - tetrahydro-1H-pyrrolizine-7a(5H)-carboxylate pH and temperature not specified in the publication 5.1.1.4 349 - 1-carboxy-7-azoniabicyclo[2.2.1]heptane pH and temperature not specified in the publication