Phenol Red (sodium salt)

Phenol red (Phenolsulfonephthalein) sodium salt is a pH indicator dye. Phenol Red sodium salt is also an antagonist of rat P2X1R. Phenol Red sodium salt enhances the halogenating activity of myeloperoxidase. Phenol Red sodium salt shows a distinct color change from pink to yellow in a positive pH reaction[1][2][3][4].

Product Specifications

CAS Number

[34487-61-1]

Product Name Alternative

Phenolsulfonephthalein sodium salt

UNSPSC

12171500

Hazard Statement

H315, H335

Target

Fluorescent Dye; Glutathione Peroxidase

Type

Dye Reagents

Related Pathways

Apoptosis; Metabolic Enzyme/Protease; Others

Field of Research

Others

Assay Protocol

https://www.medchemexpress.com/Phenol_Red_sodium_salt.html

Purity

97.0

Solubility

DMSO : 5 mg/mL (ultrasonic) |H2O : < 0.1 mg/mL (ultrasonic)

Smiles

O=S1(OC(C2=CC=C(O[Na])C=C2)(C3=CC=C(O)C=C3)C4=CC=CC=C41)=O

Molecular Formula

C19H13NaO5S

Molecular Weight

376.36

Precautions

H315, H335

References & Citations

[1]Morgan A, et al. Caution for the routine use of phenol red - It is more than just a pH indicator. Chem Biol Interact. 2019;310:108739. |[2]Peltzer D, et al. Rapid and simple colorimetric loop-mediated isothermal amplification (LAMP) assay for the detection of Bovine alphaherpesvirus 1. J Virol Methods. 2021;289:114041. |[3]King BF, et al. Antagonism of ATP responses at P2X receptor subtypes by the pH indicator dye, Phenol red. Br J Pharmacol. 2005 Jun;145 (3) :313-22.|[4]Kostelnik A, et al. Color Change of Phenol Red by Integrated Smart Phone Camera as a Tool for the Determination of Neurotoxic Compounds. Sensors (Basel) . 2016 Sep 7;16 (9) :1212.