Phenol red sodium34487-61-1100 % similar Phenol red143-74-878 % similar Bromophenol blue sodium salt33551-92-755 % similar Cresol red sodium62625-29-054 % similar Pyrocatechol violet115-41-354 % similar Metacresol purple2303-01-751 % similar Cresol red1733-12-650 % similar Bromophenol red2800-80-850 % similar Chlorophenol red4430-20-050 % similar Bromophenol blue115-39-949 % similar Iodophenol blue4430-24-449 % similar Bromocresol purple sodium62625-30-348 % similar Eriochrome cyanine R3564-18-945 % similar Bromocresol purple115-40-244 % similar Bromochlorophenol blue2553-71-144 % similar Thymol blue sodium salt62625-21-243 % similar Xylenol blue125-31-543 % similar Xylenol orange tetrasodium salt3618-43-742 % similar Bromopyrogallol red16574-43-941 % similar Bromthymol blue sodium34722-90-241 % similar