In the intricate world of chemical compounds, few possess the diverse utility of Cresol Red (CAS 62625-29-0). While primarily recognized as a reliable pH indicator, its unique properties extend into sophisticated applications, particularly within pharmaceutical research and the burgeoning field of thermochromic materials. This brown powder, readily soluble in water and ethanol, offers a spectrum of scientific possibilities.

The fundamental utility of Cresol Red lies in its capacity to signal changes in acidity and alkalinity. Its characteristic color shifts—from red to yellow between pH 0.2-1.8 and from yellow to red between pH 7.2-8.8—make it an indispensable tool for titrations and general pH monitoring in laboratories. This precise indication is vital for experimental accuracy and quality control in various chemical processes. The ease with which one can purchase Cresol Red ensures its accessibility for both educational purposes and professional research.

Beyond its role in pH determination, Cresol Red serves a crucial function in pharmaceutical research. Specifically, it is employed in the measurement of drug hydrophobicity. Understanding a drug's hydrophobicity is key to predicting its behavior within the body, influencing factors like absorption and distribution. By using Cresol Red as an indicator in specific assays, researchers can gain valuable insights into these critical pharmacokinetic properties. Companies like NINGBO INNO PHARMCHEM CO.,LTD. provide high-purity Cresol Red, essential for the reproducible results required in drug development and analysis. The price of Cresol Red in these applications reflects its critical role in ensuring drug efficacy and safety.

Furthermore, Cresol Red exhibits thermochromic properties, meaning it changes color in response to temperature variations. This characteristic is being explored for applications in smart materials, such as temperature-sensitive fibers and responsive coatings. While these applications are still in developmental stages, they showcase the compound's potential beyond traditional chemical indication. The ongoing research and development into the applications of Cresol Red highlight its enduring value and versatility in the scientific community, making it a compound of continued interest for chemists and material scientists alike.