3-pyridinecarboxylic acid, 1,4,5,6-tetrahydro-, methyl ester InChI=1/C7H11NO2/c1-10-7(9)6-3-2-4-8-5-6/h5,8H,2-4H2,1H methyl 1,4,5,6-tetrahydropyridine-3-carboxylate