sodium 1-amino-4-(4-methoxyphenylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate, 1-amino-4-(4-methoxy-phenylamino)-9,10-dioxo-9,10-dihydro-anthracene-2-sulfonate, sodium 1-amino-4-p-anisidino-9,10-dihydro-9,10-dioxoanthracene-2-sulfonate, sodium 1-amino-4-(4-methoxyphenylamino)-9,10-dioxo-9,10-dihydroanthracene 2-sulfonate, Sodium,