Skip to Content
MilliporeSigma

Key Documents

View All Documentation

Skip To

70540

Naphthol Yellow S

suitable for microscopy

Synonym(s):

2,4-Dinitro-1-naphthol-7-sulfonic acid sodium salt, 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid sodium salt, Acid Yellow 1, Flavianic acid sodium salt

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View
Pack SizeSKUAvailabilityPrice
25 g
Check Cart for Availability
$37.80
100 g
Check Cart for Availability
$120.00

About This Item

Empirical Formula (Hill Notation):
C10H4N2Na2O8S
CAS Number:
846-70-8
Molecular Weight:
358.19
EC Number:
212-690-2
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
329762555
MDL number:
MFCD00003958
Colour Index Number:
10316
Beilstein/REAXYS Number:
3839220

$37.80

Check Cart for Availability
​
Request a Bulk Order
​
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

form

powder

Quality Level

200

solubility

methanol: water (1:1): 0.5 g/10 mL, clear

εmax

≥275 at 423-433 nm in water, ≥≥ 250 at 387-397 nm in water

suitability

suitable for microscopy

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[O-]c1c(cc([N+]([O-])=O)c2ccc(cc12)S([O-])(=O)=O)[N+]([O-])=O

InChI

1S/C10H6N2O8S.2Na/c13-10-7-3-5(21(18,19)20)1-2-6(7)8(11(14)15)4-9(10)12(16)17;;/h1-4,13H,(H,18,19,20);;/q;2*+1/p-2

InChI key

CTIQLGJVGNGFEW-UHFFFAOYSA-L

Application

Naphthol yellow S has been used as a staining agent in fixed human embryonic stem cell-derived cardiomyocytes.[1]

Biochem/physiol Actions

Naphthol yellow S (NYS) is used as a stain for protein basic groups. It is an acidic dye and forms a NYS-protein complex at acidic pH. Combination of feulgen and NYS provides DNA to protein ratio.

Analysis Note

λmax. ∼428 nm/∼392 nm; E(1%,1 cm) ∼275-425/∼250-400 (H2O)

Compare Similar Items

View Full Comparison

Show Differences

1 of 1

This Item
49547A553322680
Naphthol Yellow S suitable for microscopy

Sigma-Aldrich

70540

Naphthol Yellow S

Naphthol Yellow S analytical standard

Supelco

49547

Naphthol Yellow S

Alizarin Red S certified by the BSC

Sigma-Aldrich

A5533

Alizarin Red S

Quinoline Yellow suitable for microscopy, mixture of mono- and disulfonic acid sodium salt

Sigma-Aldrich

22680

Quinoline Yellow

suitability

suitable for microscopy

suitability

-

suitability

-

suitability

suitable for microscopy

solubility

methanol: water (1:1): 0.5 g/10 mL, clear

solubility

-

solubility

H2O: 1 mg/mL

solubility

H2O: 0.1 g/10 mL

form

powder

form

-

form

powder

form

powder

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

cleaning products
cosmetics
food and beverages
personal care

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

storage temp.

-

storage temp.

room temp

storage temp.

room temp

Quality Level

200

Quality Level

100

Quality Level

200

Quality Level

200

Still not finding the right product?

Explore all of our products under Naphthol Yellow S

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

hcodes

H317,H373

Hazard Classifications

Skin Sens. 1 - STOT RE 2

Storage Class

11 - Combustible Solids

wgk

WGK 2

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
WE276745/1
276745/1
0000026057
0000027025

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

Scholtissek C, et al.
Chemistry and Cytochemistry of Nucleic Acids and Nuclear Proteins (2012)
J Gaub
The Histochemical journal, 13(5), 717-722 (1981-09-01)
Owing to the accumulation of nuclear non-histone protein (NHP) (a) in cells entering the cell cycle from the quiescent state and (b) in continuously cycling cells during G1 phase, a simultaneous determination of DNA and nuclear NHP is of high
S Gutschmidt et al.
Histochemistry, 72(3), 467-479 (1981-01-01)
In order to quantify the amount of protein in the small intestinal brush border region at different villus sites, cryostat sections of adult rat jejunum were stained with Naphthol Yellow S, Dinitrofluorobenzene and Coomassie Brilliant Blue and the dye deposits
View All Related Papers

Global Trade Item Number

SKUGTIN
70540-25G04061833415832
70540-100G04061833371206

Questions

Reviews

No rating value

Active Filters