143564-04-9 5H-2-Pyridine-4-carboxylic acid, 6,7-dihydro-6-hydroxy-7-methyl-, methyl ester, (6R-trans)- 5H-2-Pyridine-4-carboxylic acid, 6,7-dihydro-6-hydroxy-7-methylmethyl ester Isocantleyine