john coster vibrio at xs4all.nl
Sun Apr 14 23:40:00 EST 1996

                        OH CH2
C2H5O             |    |
           \/ \/\\_C_/\
            |    ||   |   |   |  |                  =Optochine 
            \\/\//  H  \/\
                  N         |   C2H5
Optochine is a chemical , ethylhydrocupreine hydrochloride.
Ethylhydrocupreine , the base for the optochine disc , is insoluble in
water. However , the hydrochloride of ethylhydrocupreine is completely
soluble in water. It is a derivate of the alkaloid hydroquinine which
is prepared by the hydrogenation , demethylation , and ethylation of
Biochemical Tests for Identification of Medical Bacteria 1976
J.F. Mac Faddin ISBN 0-683-95314-0 page149-150
E-mail:  vibrio at xs4all.nl
homepage:  http://www.xs4all.nl/~vibrio/index.htm

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