2,6-Dimethyl-5-methoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylate-2-tetrahydrofurfuryl 3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, methyl (tetrahydro-2-furanyl)methyl ester 92565-17-8 Cre 223 Cre-223