Thymol blue76-61-9100 % similar Thymol blue sodium salt62625-21-281 % similar Xylenol blue125-31-574 % similar Bromothymol blue76-59-561 % similar Metacresol purple2303-01-760 % similar Cresol red1733-12-659 % similar Thymolphthalein125-20-258 % similar Pyrocatechol violet115-41-354 % similar Bromthymol blue sodium34722-90-252 % similar Cresol red sodium62625-29-049 % similar Bromocresol purple115-40-249 % similar Bromophenol red2800-80-847 % similar Chlorophenol red4430-20-047 % similar Methylthymol blue1945-77-347 % similar Bromocresol green76-60-847 % similar Iodophenol blue4430-24-446 % similar Phenol red143-74-845 % similar Bromopyrogallol red16574-43-944 % similar Sodium thymolphthalein monophosphate28749-63-544 % similar Bromophenol blue115-39-944 % similar