2303-01-7 Usage
Description
Cresol Purple is a green crystalline powder that functions as a pH indicator dye. It is known for its ability to change colors in response to different pH levels, making it a valuable tool in various applications.
Uses
Used in Spectrophotometric pH Measurements:
Cresol Purple is used as a pH indicator for spectrophotometric pH measurements. It is effective in the pH ranges of 1.2 2.8 (red to yellow) and 7.4 9.0 (yellow to violet), allowing for accurate and reliable determination of pH levels in various solutions.
Used in Staining Epithelial Cells and Proteins:
In addition to its role in pH measurements, Cresol Purple is also employed as a staining agent for epithelial cells and proteins. Its color-changing properties make it an ideal choice for visualizing and differentiating these cellular structures under a microscope, facilitating research and diagnostic processes in the fields of biology and medicine.
Biochem/physiol Actions
m-Cresol purple is a pH indicator. It changes from red (pH 1.2) to yellow (2.8) and yellow (7.4) to purple (9.0).
Check Digit Verification of cas no
The CAS Registry Mumber 2303-01-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,3,0 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2303-01:
(6*2)+(5*3)+(4*0)+(3*3)+(2*0)+(1*1)=37
37 % 10 = 7
So 2303-01-7 is a valid CAS Registry Number.
InChI:InChI=1/C22H18O4/c1-13-11-15(23)7-9-18(13)22(19-10-8-16(24)12-14(19)2)20-6-4-3-5-17(20)21(25)26-22/h3-12,23-24H,1-2H3
2303-01-7Relevant articles and documents
Solvent-free one-pot synthesis of sulfonephthaleins from saccharin and phenols
Tillu,Dumbre,Borate,Wakharkar,Choudhary
experimental part, p. 1101 - 1107 (2012/05/05)
Sulfonephthaleins can be synthesized in a single pot from saccharin and phenol via the in situ formation of 2-sulfobenzoic anhydride, followed by its reaction with phenol using H2SO4 as the condensing agent, in the absence of any solvent. This solvent-free synthesis is more economical and environmentally benign. Copyright Taylor & Francis Group, LLC.