Rosolic acid (Aurin) 84% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY


M-Clarity™ quality level = MQ200

861324-100G 861324-25G
861324-100GEA 323 EUR
861324-100G 861324-25G
Rosolic acid (Aurin) 84% (dye content), Sigma-Aldrich®
Rosolic acid (Aurin)

p-Rosolic acid (C.I. 43800) is an acid-baseindicator from the triphenylmethane group. It is also known as aurin and 4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone.


  • p-Rosolic acid has been used to induce cellular stress in HEK293 cells
  • The transition range of p-Rosolic acid is around pH 6,6 to 8,0 (Below this pH range it is yellow and above it red)

Formula: C₁₉H₁₄O₃
MW: 290.32 g/mol
Storage Temperature: Room Temperature
MDL Number: MFCD00001624
CAS Number: 603-45-2
EINECS: 210-041-8
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Specification Test Results

Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Wavelength 264 - 270 nm
Extinction Coefficient ≥50000
Extinction Coefficient, Acidified Ethanol ≥11000
Carbon Content 66.0 - 90.8 %
Visual Interval, pH 6.6 Yellow-Orange Pass
Visual Interval, pH 8.0 Pink to Red Pass


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