Chiral resolution agent： S-(+)-Mandelic acid，17199-29-0 R-(-)-Mandelic acid，611-71-2 O-Acetyl-L-mandelic Acid/7322-88-5 O-Acetyl-D-mandelic Acid/51019-43-3 D-(-)-Mandelic Acid Ethyl Ester/10606-72-1 L-(+)-Mandelic Acid Ethyl Ester/13704-09-1 D-(-)-Mandelic Acid Methyl Ester/20698-91-3 L-(+)-Mandelic Acid Methyl Ester21210-43-5 Di-p-toluoyl-D-tartaric acid monohydrate/D-DTTA(H2O)/71607-32-4 D(+)-O,O'-di(p-toluoyl)tartaric acid /L-DTTA(H2O)/71607-31-3 (+)-Di-1,4-toluoyl-D-tartaric acid monohydrate/D-DTTA/32634-68-7 (-)-Di-p-toluoyl-L-tartaric acid/L-DTTA/32634-66-5 (+)-Dibenzoyl-D-tartaric acid monohydrate/D-DBTA(H20) /80822-15-7 (-)-Dibenzoyl-L-tartaric acid monohydrate/L-DBTA (H2O)/62708-56-9 (+)-dibenzoyl-(D)-tartaric acid/D-DBTA/17026-42-5 (2R,3R)-(-)-dibenzoyl-L-tartaric acid anhydrous/L-DBTA/2743-38-6 SHANGHAI HANHONG CHEMICAL CO., LTD.