diethyl 4-ethyl-1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate, 4-Aethyl-2,6-dimethyl-1,4-dihydro-pyridin-3,5-dicarbonsaeure-diaethylester, diethyl 2,6-dimethyl-4-ethyl-1,4-dihydropyridine-3,5-dicarboxylate, 4-ethyl-2,6-dimethyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid diethyl ester, 3,5-diethoxycarbonyl-2,6-dimethyl-4-ethyl-1,4-dihydropyridine, 3,5-Diethoxycarbonyl-1,4-dihydro-2,6-dimethyl-4-ethylpyridine, 3,5-Dicarbethoxy-2,6-dimethyl-4-ethyl-1,4-dihydropyridine, Diethyl 4-ethyl-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate