3-(1-benzhydrylazetidin-3-yl) 5-isopropyl 2-amino-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate-D7; (±)-2-Amino-1,4-dihydro-6-methyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic Acid 3-[1-(Diphenylmethyl)-3-azetidinyl] 5-(1-methylethyl) Ester-D7; Azelnidipine-D7; CS 905-D7; Calblock 3-[1-(Diphenylmethyl)-3-azetidinyl] 5-isopropyl (±)-2-Amino-1,4-dihydro-6-methyl-4-(m-nitrophenyl)-3,5-pyridinedicarboxylate