Pyrocatechol violet115-41-3100 % similar Cresol red1733-12-676 % similar Bromophenol red2800-80-876 % similar Chlorophenol red4430-20-076 % similar Phenol red143-74-867 % similar Cresol red sodium62625-29-061 % similar Bromophenol blue115-39-959 % similar Iodophenol blue4430-24-459 % similar Xylenol blue125-31-558 % similar Phenol red sodium34487-61-154 % similar Thymol blue76-61-954 % similar Bromocresol purple115-40-252 % similar Bromochlorophenol blue2553-71-152 % similar Metacresol purple2303-01-751 % similar Bromophenol blue sodium salt33551-92-749 % similar Bromopyrogallol red16574-43-949 % similar Bromocresol green76-60-846 % similar Thymol blue sodium salt62625-21-245 % similar Bromocresol purple sodium62625-30-343 % similar Bromothymol blue76-59-542 % similar