Flynn, Thiel, Boutell & Tanis
Optical resolution with .beta.-1,4-xylan dibenzoate
 A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers. 
Daicel Chemical Industries, Ltd.
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Tohru Ichiro Koichi Hajime Yoshio
Shibata Okamoto Hatada Namikoshi Okamoto