Cresol red, 97%

Cresol red, 97% is an acidic phenolsulfonphthalein triphenylmethane dye. Cresol red, 97% generates reactive oxygen species and singlet oxygen under ultrasonic irradiation, interacts with bovine serum albumin, alters the structure of bovine serum albumin, and oxidizes the fluorescent amino acid residues of bovine serum albumin. Cresol red, 97% can be decolorized and biodegraded by *Absidia spinosa* M15, producing phenylacetic acid and benzoic acid metabolites. Cresol red, 97% serves as a pH indicator (orange at pH 1.8-yellow at pH 2.0, yellow at pH 7.0-purple at pH 8.8). Cresol red, 97% can be used to indicate pH, temperature and salinity^[1][2]. In Vitro:Cresol red, 97% binds tightly to bovine serum albumin (BSA) via a static quenching mechanism, with an equilibrium binding constant of 7.25×10⁵ L/M. There is one primary binding site, which effectively quenches the intrinsic fluorescence of BSA^[1].
Cresol red, 97% generates reactive oxygen species (ROS) under ultrasonic irradiation, with singlet oxygen (¹O₂) as the main component, as demonstrated by oxidative extraction spectrophotometry^[1].