Skip to Content
Merck
CN

114774

3′,3′′,5′,5′′-Tetrabromophenolphthalein ethyl ester potassium salt

indicator grade

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C22H13Br4KO4
CAS Number:
62637-91-6
Molecular Weight:
700.05
EC Number:
263-661-6
UNSPSC Code:
12171500
PubChem Substance ID:
24847193
Beilstein/REAXYS Number:
3848263
MDL number:
MFCD00011662

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI key

WCIQBKUTYDIBJC-UHFFFAOYSA-M

InChI

1S/C22H14Br4O4.K/c1-2-30-22(29)14-6-4-3-5-13(14)19(11-7-15(23)20(27)16(24)8-11)12-9-17(25)21(28)18(26)10-12;/h3-10,27H,2H2,1H3;/q;+1/p-1

SMILES string

[K+].CCOC(=O)c1ccccc1\C(c2cc(Br)c([O-])c(Br)c2)=C3\C=C(Br)C(=O)C(Br)=C3

grade

indicator grade

visual transition interval

3.0-3.5, yellow to green, 4.2-4.9, blue-green to blue-violet

mp

210 °C (dec.) (lit.)

λmax

386 nm (2nd), 593 nm

Biochem/physiol Actions

3′,3′′,5′,5′′-Tetrabromophenolphthalein ethyl ester is used in the spectrophotometric method of total protein determination.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000060755
0000060749
0000049804
0000059832
0000043004

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

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

Visit the Document Library

Spectrophotometric determination of total proteins in blood plasma: a comparative study among dye-binding methods.
Zaia DAM, et al.
Brazilian Archives of Biology and Technology, 48, 385-388 (2005)
[Pharmaco-analytical application of tetrabromophenolphthalein ethyl ester indicator dye. III. Interaction between alkaloids and TBPE].
G Szász et al.
Acta pharmaceutica Hungarica, 50(4), 161-165 (1980-07-01)
H T Chang et al.
Electrophoresis, 22(3), 394-398 (2001-03-22)
Electroelution of protein bands from a gel has advantages over the competitive common technique requiring gel sectioning with respect to yield, speed and the potential for computer-controlled application to multicomponent two-dimensional (2-D) gels. The electroelution design for the commercial high-performance
J G Rio et al.
Journal of analytical toxicology, 5(6), 267-269 (1981-11-01)
A simple direct colorimetric test using a tetrabromophenolphthalein reagent for detecting basic drugs in urine is described. The response of 62 commonly encountered drugs and metabolites to this test are described and 39 of these compounds were found to react.
Ion association titration for the determination of local anesthetics in pharmaceuticals with tetrabromophenolphthalein ethyl ester as an indicator.
T Sakai et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 17(9), 1105-1107 (2001-11-16)
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