MilliporeSigma
All Photos(4)

Documents

N4638

Sigma-Aldrich

Neutral Red

powder, BioReagent, suitable for cell culture

Sign Into View Organizational & Contract Pricing

Synonym(s):
3-Amino-7-dimethylamino-2-methylphenazine hydrochloride, Basic Red 5, Toluylene red
Empirical Formula (Hill Notation):
C15H17ClN4
CAS Number:
Molecular Weight:
288.78
Colour Index Number:
50040
Beilstein/REAXYS Number:
3918740
EC Number:
MDL number:
PubChem Substance ID:

product line

BioReagent

Quality Level

form

powder

composition

Dye content, ≥90%

technique(s)

cell culture | mammalian: suitable
titration: suitable

color

brown to black

pH

6.8-8.0, red to yellow

mp

290 °C (dec.) (lit.)

solubility

H2O: 10 mg/mL

application(s)

diagnostic assay manufacturing

storage temp.

2-8°C

SMILES string

Cl.CN(C)c1ccc2nc3cc(C)c(N)cc3nc2c1

InChI

1S/C15H16N4.ClH/c1-9-6-13-15(8-11(9)16)18-14-7-10(19(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H

InChI key

PGSADBUBUOPOJS-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
N2889N6264N7005
Neutral Red powder, BioReagent, suitable for cell culture

N4638

Neutral Red

Neutral Red Solution (0.33%) 3.3 g/L in DPBS, sterile-filtered, BioReagent, suitable for cell culture

N2889

Neutral Red Solution (0.33%)

Neutral Red Solution, Buffered

N6264

Neutral Red Solution, Buffered

Neutral Red Dye content ≥90 %

N7005

Neutral Red

color

brown to black

color

-

color

-

color

brown to black

application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

solubility

H2O: 10 mg/mL

solubility

-

solubility

-

solubility

water: 10 mg/mL, dark red

form

powder

form

solution

form

solution

form

powder

composition

Dye content, ≥90%

composition

-

composition

-

composition

Dye content, ≥90%

General description

Neutral red (C.l. 50040, Cl Basic red 5) is a protonated diaminophenazine dye that has a small planar conjugated system.

Application

Neutral red has been used in several histological staining applications that include:
  • as a nuclear stain
  • as a counterstain in the Gram procedure, either alone, or as a component of the Twort stain, a fast green-neutral red mixture.
  • fluorescent staining of nucleic acids in nervous tissue, of lipids and hydrophobic substances such as suberin and of phenolic compounds in algal cell walls
  • detection of viable yeast cells in dandruff samples and of mussel larvae
  • Neutral red has also been used as a stain in flow cytometry.
Useful as an indicator for preparing neutral red paper, and as a biological stain.

Preparation Note

Purified

related product

Product No.
Description
Pricing

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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

Jung-Pyo Oh et al.
Molecular brain, 13(1), 112-112 (2020-08-18)
A unique feature of fear memory is its persistence that is highly relevant to fear and anxiety-related mental disorders. Recurrent reactivation of neural representations acquired from a traumatic event is thought to contribute to the indelibility of fear memory. Given
Pieter C Vogelaar et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 33(12), 2128-2138 (2018-04-17)
Mitochondrial dysfunction plays an important role in kidney damage in various pathologies, including acute and chronic kidney injury and diabetic nephropathy. In addition to the well-studied ischaemia/reperfusion (I/R) injury, hypothermia/rewarming (H/R) also inflicts acute kidney injury. Substituted 6-hydroxychromanols are a
K R Sindhu et al.
Acta biomaterialia, 115, 197-209 (2020-08-20)
Hydrogels used in regenerative medicine are often designed to allow cellular infiltration, degradation, and neovascularization. Low molecular weight hydrogels (LMWHs), formed by self-assembly via non-covalent interactions, are gaining significant interest because they are soft, easy to use and injectable. We
Ryan Akin et al.
International journal of molecular sciences, 20(24) (2019-12-19)
Metastatic renal cell carcinoma (RCC) remains an important clinical issue; the 5-year survival rate of patients with metastasis is approximately 12%, while it is 93% in those with localized disease. There is evidence that blood cadmium and lead levels are
Doris Lou Demy et al.
Journal of cell science, 133(20) (2020-09-26)
Most tissues harbor a substantial population of resident macrophages. Here, we elucidate a functional link between the Slc7a7 cationic amino acid transporter and tissue macrophages. We identified a mutant zebrafish devoid of microglia due to a mutation in the slc7a7

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