Dimethyl Sulfate CAS 77-78-1 is supplied by Chemicea Pharmaceuticals Pvt. Ltd. for research only and analytical reference use. The material supports laboratory activities involving impurities assessment, method development and comparative studies. It is suitable for use as a reference standard in controlled research settings that require consistency and traceability. Each batch is supported with appropriate documentation to assist analytical teams during routine evaluation and quality focused research work. This product is not intended for therapeutic, clinical or commercial use and should be handled exclusively within qualified laboratories conducting impurity related studies and compliant analytical investigations for validated internal reference purposes.