Patent ID: 8828373
Filing Date: 2014-09-09
Classification: A61K,C08G

Abstract:
1. A polyalkylene glycol derivative comprising a compound of the formula (1): wherein R is a hydrocarbon group having 1 to 24 carbon atoms, OA Group (I) wherein Z represents an alkylene group alone or an alkylene group containing an ether bond, an ester bond, a urethane bond, an amide bond, a carbonate bond, or a secondary amino group and W′ is a halogen atom selected from Cl, Br, and I, and Y is a linker and represents an ether bond, an amide bond, a urethane bond, an ester bond, a secondary amino group, a carbonate bond, or an alkylene group containing these bonds, polydispersity Mw/Mn of the above polyalkylene glycol derivative in gel permeation chromatography satisfying the following relationship: wherein Mw represents a weight average molecular weight and Mn represents a number average molecular weight.