Iodophenol blue4430-24-4100 % similar Bromophenol blue115-39-967 % similar Bromocresol purple115-40-263 % similar Phenol red143-74-860 % similar Bromochlorophenol blue2553-71-159 % similar Pyrocatechol violet115-41-359 % similar Cresol red1733-12-657 % similar Bromophenol blue sodium salt33551-92-756 % similar Bromophenol red2800-80-854 % similar Chlorophenol red4430-20-054 % similar Bromopyrogallol red16574-43-953 % similar Bromocresol green76-60-853 % similar Xylenol blue125-31-552 % similar Metacresol purple2303-01-752 % similar Bromocresol purple sodium62625-30-352 % similar Xylenol orange1611-35-450 % similar Phenol red sodium34487-61-149 % similar Eriochrome cyanine R3564-18-948 % similar Bromothymol blue76-59-548 % similar Cresol red sodium62625-29-047 % similar