2-Ethoxy-1-methoxy-4-(2-methyl sulfonylethenyl) benzene

Apremilast Impurity-9 (CAS No.: 1831833-38-5, Molecular Formula: C₁₂H₁₆O₄S, Molecular Weight: 256.32 g/mol) , it is chemicaly identified as 2-Ethoxy-1-methoxy-4-(2-methyl sulfonylethenyl) benzene , is a pharmaceutical analytical reference standard designed for impurity profiling, method development, and validation studies in drug analysis. It is used for precise detection, separation, and quantification of Apremilast-related substances in active pharmaceutical ingredients and finished dosage forms. This impurity standard supports high-accuracy analytical workflows under ICH, USP, EP, FDA, and EMA regulatory guidelines, ensuring dependable and reproducible results in quality control environments. Manasa Life Sciences, Hyderabad, India, a globally recognized manufacturer and supplier, offers this reference material with complete documentation including COA, MSDS/SDS, GMP, and GDP compliance. It ensures full traceability, regulatory acceptance, and consistent pharmaceutical quality standards.