Product Description: m-Cresol purple is a pH indicator dye with large cross section and halochromic property in neutral pH range[1].
Formula: C21H18O5S
References: [1]Zou X, et al. m-Cresol purple functionalized surface enhanced Raman scattering paper chips for highly sensitive detection of pH in the neutral pH range. Analyst. 2017 Jun 26;142(13):2333-2337.