Skip to Content
Merck
CN

277339

Methyl Purple

in H2O

Synonym(s):

Methyl Purple indicator solution

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C67H62N8Na4O14S3
CAS Number:
1340-02-9
Molecular Weight:
1391.41
NACRES:
NA.47
PubChem Substance ID:
24856754
UNSPSC Code:
12171500
MDL number:
MFCD00070843

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

Product Name

Methyl Purple, in H2O

InChI

1S/C37H36N2O10S3.2C15H15N3O2.4Na/c1-3-38(24-26-7-5-9-33(21-26)50(41,42)43)30-15-11-28(12-16-30)37(35-20-19-32(40)23-36(35)52(47,48)49)29-13-17-31(18-14-29)39(4-2)25-27-8-6-10-34(22-27)51(44,45)46;2*1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20;;;;/h5-23H,3-4,24-25H2,1-2H3,(H3,41,42,43,44,45,46,47,48,49);2*3-10H,1-2H3,(H,19,20);;;;/q;;;4*+1/p-4/b;2*17-16+;;;;

SMILES string

CN(C)c1ccc(cc1)N=Nc2ccccc2C(=O)O[Na].CN(C)c3ccc(cc3)N=Nc4ccccc4C(=O)O[Na].CCN(Cc5cccc(c5)S(=O)(=O)O[Na])c6ccc(cc6)C(=C7/C=CC(C=C7)=[N+](CC)Cc8cccc(c8)S([O-])(=O)=O)\c9ccc(O)cc9S(=O)(=O)O[Na]

InChI key

CNJVTYXLOYTWPD-HFZRWZJVSA-J

form

liquid

concentration

in H2O

pH

4.8-5.4, violet to green

mp

0 °C

density

1.001 g/mL at 25 °C

λmax

409 nm
618 nm (2nd)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

100

Looking for similar products? Visit Product Comparison Guide

Related Categories

Biochem/physiol Actions

Methyl Purple is a green colored powder. It changes color from purple (pH 4.8) to green (pH 5.4). Methyl Purple acts as an antimicrobial agent. In addition, it also aids in detection of lactic acid bacteria and determination of iron in human hair.

General description

Methyl purple is a quinone-imide redox dye.

Storage Class

12 - Non Combustible Liquids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBQ9182
SHBQ1944
SHBP7347
MKCH8122
MKBX9615V

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

T Graan et al.
Analytical biochemistry, 144(1), 193-198 (1985-01-01)
Methyl purple is a recently introduced quinone-imide redox dye that has been shown to be an exceptionally sensitive monitor of photosystem I activity in chloroplasts. This compound has a wide range of potential applications for studies of photosynthetic electron transfer
R. W. Sabnis
Handbook of Acid-Base Indicators (2007)

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