Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

P8759

Sigma-Aldrich

Pyrogallol Red

Powder

Synonym(s):

Pyrogallolsulfonephthalein

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C19H12O8S
CAS Number:
32638-88-3
Molecular Weight:
400.36
Beilstein:
61394
EC Number:
251-134-3
MDL number:
MFCD00005046
UNSPSC Code:
12171500
PubChem Substance ID:
24898975
NACRES:
NA.47

product name

Pyrogallol Red, Suitable for use as a complexometric indicator

Quality Level

200

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

Looking for similar products? Visit Product Comparison Guide

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 Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 2

1 of 2

Sodium molybdate dihydrate ≥99.5%

Sigma-Aldrich

M1003

Sodium molybdate dihydrate

Total Protein Reagent

Sigma-Aldrich

T1949

Total Protein Reagent

Randolph B Caldwell et al.
Applied and environmental microbiology, 70(1), 610-612 (2004-01-09)
A simple and reliable method for precipitating protein from bacterial culture supernatants based on a pyrogallol red-molybdate-methanol (PRMM) protocol has been developed and applied for the analysis of proteins secreted by a bacterial type III secretion system. PRMM-based precipitation has
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
Anja Feldner et al.
EMBO molecular medicine, 9(7), 890-905 (2017-05-14)
Hydrocephalus is a common congenital anomaly.
Tomoko Usui et al.
Clinical and experimental nephrology, 24(2), 151-156 (2019-11-18)
Urine dipstick tests are often used to evaluate proteinuria during health checkups. We examined the dipstick's accuracy in assessing the proteinuria levels among Japanese workers. We assessed subjects aged ≥ 18 years who had a health checkup at the University of Tokyo in
Special Care in Dentistry : Official Publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry null
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service