anthranilic acid hydrochloride

O=[N+]([O-])c1cnc2ccccc2c1O
Reaction #607450
3-nitro-4-hydroxyquinoline
DOI: 10.6084/m9.figshare.5104873.v1uspto-grants-2016_05
O=c1[nH]c2ccccc2c(=O)o1
Reaction #709528
Isatoic anhydride
DOI: 10.6084/m9.figshare.5104873.v1uspto-grants-1988_09
O=[N+]([O-])c1cnc2ccccc2c1O
Reaction #2053600
3-nitro-4-hydroxyquinoline
DOI: 10.6084/m9.figshare.5104873.v1uspto-grants-2013_04