5-methoxy-2-methyl-4-(3-oxobutanamido)benzenesulfonic acid

4-[(1,3-Dioxobutyl)amino]-5-methoxy-2-methylbenzenesulfonic acid

4-[(1,3-dioxybutyl)amino]-5-methoxy-2-methyl-benzenesulfonic acid

Benzenesulfonic acid,4-[(1,3-dioxobutyl)aMino]-5-Methoxy-2-Methyl-