1-Oxa-3-azaspiro(4,5)decane-2,4-dione, 7-methyl-3-(2-(2-pyridy)lethyl)-, low melting isomer 7-Methyl-3-(2-(2-pyridyl)ethyl)-1-oxa-3-azaspiro(4,5)decane-2,4-dione low melting isomer EN7060265