Aranidipine
Aranidipine is a novel dihydropyridine derivative that gives rise to two active metabolites (M-1α and M-1β) that exhibit hypotensive activity. It is a calcium antagonist with the formula methyl 2-oxopropyl 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylate. It was developed by Maruko Seiyaku, introduced by Taiho and launched in Japan in 1997.