Salicylic Acid Impurity 12 (Dimethyl Sulfate) CAS 77-78-1 is supplied by Chemicea Pharmaceuticals Pvt. Ltd. for research-only and analytical reference applications. This material is intended to support laboratory work involving impurities assessment, comparative analysis and quality focused studies. It is suitable for use as a reference standard in controlled research environments where consistency, traceability and documentation are essential. Each batch is supported with appropriate documentation to assist researchers during routine analytical activities. This product is not intended for therapeutic or clinical use and is offered exclusively for impurity profiling and compliant analytical research purposes.