p-nitrophenyl 9,10-dimethoxyanthracene-2-sulfonate
p-cyanobenzyl 9,10-dimethoxyanthracene-2-sulfonate
benzyl 9,10-dimethoxyanthracene-2-sulphonate
p-chlorobenzyl 9,10-dimethoxyanthracene-2-sulfonate
3',4'-dinitrobenzyl 9,10-dimethoxyanthracene-2-sulfonate