http://pastport.jp/user/hktkljn/timeline/hpmc%20cellulose%20ether Hydroxypropyl MethylCellulose (HPMC CAS9004-65-3 ) is odorless, tasteless,non-toxic cellulose ether produced from natural high molecular cellulose through series of chemical processing and achieved.https://www.fqhpmc.com/news/HPMC-Cellulose-Ether.html ja-JP