9-(diethylamino)benzo[a]phenothiazin-5-one

4-n-Propyl-5-hydroxynaphth<2,1-d>1,3-oxathiol-2-one

5-Hydroxy-4-nitroso-naphth<2,1-d>1,3-oxathiol-2-on

4-Isobutyl-5-hydroxynaphth<2,1-d>1,3-oxathiol-2-one

4-Dodecanoyl-5-hydroxy-naphtho[2,1-d][1,3]oxathiol-2-one