HYALURONIC ACID DERIVATIVE AND PHARMACEUTICAL COMPOSITION THEREOF
申请人:Akiyoshi Kazunari
公开号:US20110212901A1
公开(公告)日:2011-09-01
The present invention provides a hydrophobic group-introduced hyaluronic acid derivative comprising at least one repeating unit represented by the formula (I):
wherein R
1
, R
2
, R
3
, R
4
, Z, n, Ra, Y, and X
1
are as defined in the specification.