Methyl 5-((2-hydroxy-2-methylpropyl)(methyl)carbamoyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylate

Methyl 5-((2-hydroxy-2-methylpropyl)(methyl)carbamoyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylateis used as pharmaceutical standard.