Merck, 114529-25G, Phenol Red

Name: Phenol Red
Brand: Merck
SKU: 114529-25G

Size:25 g, Phenolsulfonphthalein, ACS reagent

Available Catalog Numbers

114529-25G 114529-5G

Catalog Number: 114529-25G

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Category

Hematology Analyzers

Pack Size25 g

TagsClinical & Diagnostics Tissue Diagnostics Hematology Stains

CollectionsMerck Tissue Diagnostics – Universal Reagents for Histology & IHC Merck Cell Culture Supplements & Reagents: Complete Solutions for Research & Bioproduction Merck Roche Life Science Products for PCR, RT‑PCR & Nucleic Acid Purification

Description

General description
Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion that has a larger conjugated system than the yellow hydroxyquinone).
Application
Phenol red is commonly used as a pH indicator in biology and medicine. It is incorporated into microbiological culture media for the identification of Escherichia coli strains. Its clinical diagnostic applications include the investigation of gastric and duodenal ulcers and the assessment of tear function in ophthalmology. Phenol red is also used as a tracer to assess the permeability of the ileal mucosal membrane and to assess bacterial leakage through root-filling materials in dentistry.
Phenol Red has been used for the preparation of phenol red gavage meal for measurement of gastric emptying in rats.
Suitable for use as a pH indicator.
Biochem/physiol Actions
Phenol Red is a pH indicator which changes color from yellow to red.

Specifications

General

UNSPSC Code	12171500
NACRES	NA.47
PubChem Substance ID	24847179
EC Number	205-609-7
Beilstein/REAXYS Number	326470
MDL number	MFCD00003552
InChI key	BELBBZDIHDAJOR-UHFFFAOYSA-N
InChI	1S/C19H14O5S/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19/h1-12,20-21H
SMILES string	Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)cc4
grade	ACS reagent
form	powder
clarity of soln	passes test
technique(s)	titration: suitable
Quality Level	200
solubility	water: 0.77 g/L at 100 °C
λ<sub>max</sub>	360 nm
ε (extinction coefficient)	≥10000 at 288-294 nm in H2O
application(s)	diagnostic assay manufacturinghematologyhistology
storage temp.	room temp

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