7-hydroxy-3,4-dihydro-2H-benzo[b][1,4]thiazine-3-carboxylic acid

6,7-dibromonaphthalene-1,4-dione

2-[(6,9-diacetyloxy-4-methyl-3,3-dioxo-1,2,5,9b-tetrahydrobenzo[e][1]benzothiol-8-yl)sulfanyl]ethyl acetate

4,13-dioxadispiro[4.1.5⁷.1⁵]trideca-8,11-diene-3,10-dione

1,6,7,14-Tetraoxa-dispiro[4.2.5.2]pentadeca-9,12-diene-2,11-dione