(-)-O-(9)-Allyl-N-(9-anthracenylmethyl) cinchonidiniumbromide is an alkylating agent that modifies the structure of proteins and other biological molecules. It can be used in asymmetric synthesis to produce (R,R)-(+)-cinchonidine. (-)-O-(9)-Allyl-N-(9-anthracenylmethyl) cinchonidiniumbromide is a synthetic modification of (-)-O-(4'-nitrophenyl) cinchonidinium bromide, which was originally synthesized by gramine and lysine residues.