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Merck
CN

P8759

Pyrogallol Red

Powder

Synonym(s):

Pyrogallolsulfonephthalein

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About This Item

Empirical Formula (Hill Notation):
C19H12O8S
CAS Number:
Molecular Weight:
400.36
NACRES:
NA.47
PubChem Substance ID:
UNSPSC Code:
12171500
EC Number:
251-134-3
MDL number:
Beilstein/REAXYS Number:
61394
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Product Name

Pyrogallol Red, Suitable for use as a complexometric indicator

Quality Level

form

powder

technique(s)

titration: suitable

color

green to very dark green, and brown

mp

≥300 °C (lit.)

solubility

1 M NH4OH: 10 mg/mL, clear

εmax

≥450 at 475 nm in methanol

suitability

suitable for complexometric indicator

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc2c(Oc3c(O)c(O)ccc3C24OS(=O)(=O)c5ccccc45)c1O

InChI

1S/C19H12O8S/c20-12-7-5-10-17(15(12)22)26-18-11(6-8-13(21)16(18)23)19(10)9-3-1-2-4-14(9)28(24,25)27-19/h1-8,20-23H

InChI key

KUQNCHZOCSYKOR-UHFFFAOYSA-N

General description

Pyrogallol red (PGR) is an ortho-diphenolic dye. It has high reactivity towards reactive oxygen species (ROS) and reactive nitrogen species (RNS) that include peroxynitrite, radical, peroxyl radicals, hypochlorite & superoxide anion.

Application

Pyrogallol Red is suitable to prepare Fujita and Watanabe dye reagent used in Pyrogallol Red-Molybdenum (IV) complex (PR) method for the determination and quantification of urinary proteins.


Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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Molecules-Kinetics of the Reaction of Pyrogallol Red, a Polyphenolic Dye, with Nitrous Acid: Role of NO and NO2
Molecules (Basel) null
Juan David Figueroa et al.
Redox biology, 24, 101207-101207 (2019-05-19)
Carbonate radicals (CO3-) are generated by the bicarbonate-dependent peroxidase activity of cytosolic superoxide dismutase (Cu,Zn-SOD, SOD-1). The present work explored the use of bleaching of pyrogallol red (PGR) dye to quantify the rate of CO3- formation from bovine and human
William E Haley et al.
Mayo Clinic proceedings, 91(12), 1744-1752 (2016-10-26)
To determine whether there is a persistent decline in kidney function after the first kidney stone event. Incident symptomatic stone formers and age- and sex-matched controls underwent 2 study visits 90 days apart to assess kidney function, complete a survey



Global Trade Item Number

SKUGTIN
P8759-5G04061834401728