TETRANITROPHENOLSULFONPHTHALEIN

Tetranitrophenolsulfonephthalein

phenol,4,4’-(3h-2,1-benzoxathiol-3-ylidene)bis[2,6-dinitro-,s,s-dioxide

4,4'-[(3H-2,1-Benzoxathiole 2,2-dioxide)-3-ylidene]bis[2,6-dinitrophenol]