Appeal No. 2003-1308
Application No. 09/287,176
R3 and R'3 are identical or different and are chosen from a
hydrogen atom, a halogen atom chosen from chlorine, bromine,
iodine and fluorine, a cyano group, a C1-C4 alkyl radical, a
C1-C4 alkoxy radical, and an acetyloxy radical;
X- represents an anion;
A is a group chosen from structures A1 to A19 below:
-2-
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