YIN LIGENG,HILLMYER MARC A,GUILLAUDEU STEVEN J,SCHMITT ROBERT L
申请号：
IN10570/DELNP/2015
公开号：
IN2015DN10570A
申请日:
2015.11.18
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
Esterified cellulose ethers comprising groups of formula C(O) CHR CHR" COOA wherein R and R" are hydrogen or ( S)m ( R)n R wherein R is a hydrocarbon group having 1 to 4 carbon atoms R is an optionally substituted 5 or 6 membered cyclic group m and n each independently are 0 or 1 and A is hydrogen or a cation with the proviso that in each group CHR CHR" one of R and R" is hydrogen and the other one is ( S)m ( R)n R are useful as excipients for maintaining the concentration of poorly water soluble drugs in aqueous liquids at supersaturation levels.
