Dimethyl Sulphate CAS 77-78-1 is supplied by Chemicea Pharmaceuticals Pvt. Ltd. as a research-only material intended for analytical and reference standard applications. This product supports laboratory work focused on impurities evaluation, method verification and internal quality studies. It is suitable for use in controlled research environments where traceability and documentation are required. Each batch is accompanied by appropriate documentation to assist researchers during routine analytical activities. Dimethyl Sulphate is not intended for therapeutic, clinical or commercial use and is offered exclusively for research purposes involving impurity profiling and compliant analytical investigations within regulated laboratory settings.