B.MK CAS 5449-12-7 is produced to a minimum purity of 99.5%, verified by HPLC analysis on every production batch. Our stringent in-process quality checks eliminate impurities at the molecular level, ensuring consistent results for your synthesis or research application. Samples available for testing before bulk order commitment. Quality is our non-negotiable standard. The old CAS is 97786-86-2, 80532-66-7. Also available CAS 28578-16-7. Maggie Yeo Telegram/Signal: +85260178950 Threema: 7VMHDW92