MilliporeSigma
All Photos(3)

Documents

114359

Sigma-Aldrich

Bromocresol Green

ACS reagent, Dye content 95 %

Sign Into View Organizational & Contract Pricing

Synonym(s):
BCG; 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-3-methylphenol
Empirical Formula (Hill Notation):
C21H14Br4O5S
CAS Number:
Molecular Weight:
698.01
Beilstein:
372527
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

grade

ACS reagent

Quality Level

Assay

≥95%

form

powder

composition

Dye content, 95%

visual transition interval

3.8-5.4, yellow to blue(passes test)

mp

225 °C (dec.) (lit.)

λmax

423 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1c(Br)c(O)c(Br)cc1C2(OS(=O)(=O)c3ccccc23)c4cc(Br)c(O)c(Br)c4C

InChI

1S/C21H14Br4O5S/c1-9-12(7-14(22)19(26)17(9)24)21(13-8-15(23)20(27)18(25)10(13)2)11-5-3-4-6-16(11)31(28,29)30-21/h3-8,26-27H,1-2H3

InChI key

FRPHFZCDPYBUAU-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
114367114391R4127
Bromocresol Green ACS reagent, Dye content 95 %

Sigma-Aldrich

114359

Bromocresol Green

Bromophenol Blue ACS reagent

Sigma-Aldrich

114391

Bromophenol Blue

Rhodamine 6G Dye content ~95 %

Sigma-Aldrich

R4127

Rhodamine 6G

assay

≥95%

assay

90% (HPLC)

assay

-

assay

-

form

powder

form

powder or crystals

form

powder

form

powder

composition

Dye content, 95%

composition

Dye content, 90%

composition

-

composition

Dye content, ~95%

mp

225 °C (dec.) (lit.)

mp

230 °C (dec.) (lit.)

mp

273 °C (lit.)

mp

215 °C

λmax

423 nm

λmax

-

λmax

-

λmax

-

General description

Bromocresol Green is a synthetic triphenylmethane dye that is anionic in nature. At pH 3.8-5.4, it changes color from yellow to blue-green, and is therefore, commonly used as a pH indicator.

Application

Bromocresol green serves as a pH indicator in biology and medicinal experiments.
  • It is used widely as a vital stain to study blood-brain permeability.
  • It has been used in the pH-sensitive colorimetric determination of glutamate decarboxylase activity.
  • It has also been employed in the evaluation of paper-analytical devices for colorimetric analysis of serum samples.
  • It is used as a tracking dye for DNA agarose gel electrophoresis, in protein determinations, and in charge-transfer complexation processes.
  • It is used in TLC for the visualization of compounds with functional groups whose pKa is below 5.0.

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?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 3

1 of 3

BCG Albumin Assay Kit sufficient for 250 colorimetric tests

Sigma-Aldrich

MAK124

BCG Albumin Assay Kit

Methyl Orange ACS reagent, Dye content 85 %

Sigma-Aldrich

114510

Methyl Orange

Bromothymol blue indicator ACS,Reag. Ph Eur

Supelco

1.03026

Bromothymol blue

Preparation of Chitosan Poly(methacrylate) Composites for Adsorption of Bromocresol Green
Liu, et al.
ACS Omega, 4 (2019)
Selection of appropriate protein assay method for a paper microfluidics platform
Pokhrel, et al.
practical laboratory medicine, 21 (2020)
Martina O' Toole et al.
Talanta, 66(5), 1340-1344 (2008-10-31)
A novel inexpensive optical-sensing technique has been developed for colorimetric flow analysis. This sensing system employs two LEDs whereby one is used as the light source and the other as a light detector. The LED used as light detector is
A high-throughput colorimetric assay to measure the activity of glutamate decarboxylase
Yu, et al.
Enzyme and Microbial Technology, 49 (2011)
Fanya Ismail et al.
The Analyst, 136(4), 807-815 (2010-12-02)
In this paper we present a new theory to re-examine the immobilization technique of dye doped sol-gel films, define the strength and types of possible bonds between the immobilized molecule and sol-gel glass, and show that the immobilized molecule is

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