250198
Methyl Red
ACS reagent, crystalline
Synonym(s):
2-(4-Dimethylaminophenylazo)benzoic acid, 4-Dimethylaminoazobenzene-2′-carboxylic acid, Acid Red 2
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About This Item
Linear Formula:
(CH3)2NC6H4N=NC6H4CO2H
CAS Number:
Molecular Weight:
269.30
EC Number:
207-776-1
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
MDL number:
Colour Index Number:
13020
Beilstein/REAXYS Number:
750102
grade
ACS reagent
Quality Level
form
crystalline
technique(s)
titration: suitable
visual transition interval
4.2-6.2, pink to yellow
mp
179-182 °C (lit.)
solubility
ethanol: 1 mg/mL
λmax
410 nm
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
CN(C)c1ccc(cc1)\N=N\c2ccccc2C(O)=O
InChI
1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)/b17-16+
InChI key
CEQFOVLGLXCDCX-WUKNDPDISA-N
Application
Methyl Red has been used as pH indicator in a glucose biosensor, which is used for salivary analysis.
Biochem/physiol Actions
Methyl Red is a maroon red crystal azo dye. Methyl Red is a pH indicator and changes color at a pH of 5.5. Methyl Red is widely used in saliva sampling method. In addition, it is also employed in carbohydrate and lactic acid detection. Methyl Red has been effectively used for intrageneric differentiation of Enterobacteriaceae.
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Storage Class
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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A paper strip based non-invasive glucose biosensor for salivary analysis.
Soni A
Biosensors And Bioelectronics, 67, 763-768 (2015)
R R colwell and R grigorova
Methods in Microbiology, 19 (1987)
An improved dithizone method for the determination of small quantities of zinc in blood and tissue samples.
Vallee BL and Gibson JG 2nd
The Journal of Biological Chemistry, 176, 435-443 (1948)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 250198-100G | 04061835570416 |
| 250198-25G | 04061835570423 |