Patent ID: 8153551

Claim:
An optical isomer separating filler comprising a polysaccharide derivative chemically bonded onto a support, wherein a halogen content in the filler is 3.0% to 5.0%, wherein the polysaccharide derivative is one of a cellulose tris 3,5-dichlorophenylcarbamate derivative, a cellulose tris 2,4-dichlorophenylcarbamate derivative, a cellulose tris 3,4-dichlorophenylcarbamate derivative, a cellulose tris 2,5-dichlorophenylcarbamate derivative, a cellulose tris 4-fluorophenylcarbamate, a cellulose tris 4-bromophenylcarbamate derivative, a cellulose tris 4-iodophenylcarbamate derivative, an amylose 3,5-dichlorophenylcarbamate derivative, an amylose 2,4-dichlorophenylcarbamate derivative, an amylose 3,4-dichlorophenylcarbamate derivative, an amylose 2,5-dichlorophenylcarbamate derivative, an amylose 4-fluorophenylcarbamate, an amylose 4-bromophenylcarbamate derivative, and an amylose 4-iodophenylcarbamate derivative.