. "3,3-Bis(3-chloro-4-hydroxyphenyl)-2,1\u03BB6-benzoxathiole-1,1(3H)-dione" . . . . "Chlorophenol_red" . . . "Chlorophenol red" . . . . . "Chlorophenol red" . "3\u2032,3\u2032-Dichlorophenolsulfonaphthalein" . "chlorophenol red" . . . .