Bromocresol green76-60-840 % similar Iodophenol blue4430-24-439 % similar Phenol red143-74-838 % similar Bromopyrogallol red16574-43-937 % similar Bromophenol blue115-39-937 % similar Bromochlorophenol blue2553-71-136 % similar Xylenol orange1611-35-435 % similar P-Xylenolphthalein50984-88-834 % similar Chlorothymol89-68-933 % similar 6-Aminothymol hydrochloride6321-11-532 % similar Sodium O-phenolsulfonate1300-51-230 % similar