Nifedipine Impurity 1, chemically known as 4-(2-nitrophenyl)-2,6-dimethyl-3,5-pyridinedicarboxylic acid dimethyl ester, is a critical synthetic byproduct generated during the condensation of ethyl acetoacetate and nitrobenzaldehyde. Its molecular formula is C18H20N2O7 with CAS Registry Number 62688-98-0. This impurity serves as an essential reference standard for identifying degradation pathways in calcium channel blocker manufacturing.
Store in a cool, dry, and well-ventilated area away from direct sunlight at temperatures below 25°C. Personnel must utilize appropriate PPE including nitrile gloves and safety goggles due to potential sensitization risks. Strictly limit exposure as this compound is intended solely for laboratory analysis and not for clinical administration.