Benidipine Impurity 4 (Nifedipine)(CAS: 21829-25-4)

Benidipine Impurity 4, also known as Nifedipine (CAS 21829-25-4), is a chemical compound commonly identified as an impurity during the synthesis or purification of Benidipine. It has a molecular formula of C17H18Cl2N2O4 and is typically a white crystalline solid with low solubility in water. This compound is structurally related to calcium channel blockers and may arise from incomplete reactions or degradation processes in pharmaceutical manufacturing.

Benidipine Impurity 4 (CAS 21829-25-4) is primarily used in pharmaceutical quality control to identify and quantify impurities in Benidipine production. It also serves as a research tool for studying metabolic pathways and drug stability. Additionally, it may be employed in analytical chemistry for method validation and impurity profiling in drug substances, ensuring compliance with regulatory standards like ICH Q3A.

Benidipine Impurity 4 (CAS 21829-25-4) is generally considered safe in trace amounts, but its safety depends on exposure levels and handling. As with many chemical impurities, it requires proper protective measures, such as gloves and ventilation, during handling. Toxicological data suggests minimal acute toxicity, but long-term effects are less documented. Safety standards emphasize adherence to guidelines for pharmaceutical impurities, ensuring it does not compromise drug purity or efficacy.

Benidipine Impurity 4 (CAS 21829-25-4) should be stored in a sealed, cool, and dry container, away from light and moisture. It is stable at temperatures between 2°C and 8°C, with humidity levels below 40% recommended to prevent degradation. Avoid exposure to heat or direct sunlight, and store in a well-ventilated area to maintain its chemical integrity and safety.