2,6-Dimethyl-3,5-diethoxycarbonyl-4(sodium carboxylate)-1,4-dihydropyridine 27296-05-5 3,4,5-Pyridinetricarboxylic acid, 1,4-dihydro-2,6-dimethyl-2,6-dimethyl-, 3,5-diethyl ester, monosodium salt 3,5-Diethyl 1,4-dihydro-2,6-dimethyl-2,6-dimethyl-3,4,5-pyridinetricarboxylate monosodium salt