Skip to Content
Merck
All Photos(1)

Key Documents

293407

Sigma-Aldrich

2-Quinoxalinecarboxylic acid

97%

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C9H6N2O2
CAS Number:
Molecular Weight:
174.16
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

97%

mp

208 °C (dec.) (lit.)

SMILES string

OC(=O)c1cnc2ccccc2n1

InChI

1S/C9H6N2O2/c12-9(13)8-5-10-6-3-1-2-4-7(6)11-8/h1-5H,(H,12,13)

InChI key

UPUZGXILYFKSGE-UHFFFAOYSA-N

General description

Linear and Freundlich adsorption isotherm coefficient of 2-quinoxalinecarboxylic acid has been evaluated.

Application

2-Quinoxalinecarboxylic acid has been used in the preparation of:
  • N-(2-quinoxaloyl)-α-amino acids
  • bisquinoxaloyl (bisquinoxalinecarbonyl) derivatives

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

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?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

M D Rose et al.
Food additives and contaminants, 12(2), 177-183 (1995-03-01)
A method for the determination of residues of quinoxaline-2-carboxylic acid (QCA), the major metabolite of carbadox, in pig kidney has been developed. Tissue samples were subjected to alkaline hydrolysis, liquid-liquid extractions, ion-exchange chromatography and further extraction to concentrate the analyte
N Prabavathi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 92, 325-335 (2012-03-27)
The FTIR and FT-Raman spectra of 2-quinoxaline carboxylic acid (2-QCA) has been recorded in the region 4000-450 and 4000-100 cm(-1), respectively. The conformational analysis, optimized geometry, frequency and intensity of the vibrational bands of 2-QCA were obtained by the density
Kento Koketsu et al.
Organic letters, 8(21), 4719-4722 (2006-10-06)
[reaction: see text] Little is known about how quinoxaline-2-carboxylic acid (QC) is synthesized in nature. On the basis of analysis of echinomycin biosynthetic gene clusters as well as feeding experiments with labeled precursors, we have proposed a biosynthetic pathway to
Joshua A Hagen et al.
Sensors (Basel, Switzerland), 11(7), 6645-6655 (2011-12-14)
Zinc oxide field effect transistors (ZnO-FET), covalently functionalized with single stranded DNA aptamers, provide a highly selective platform for label-free small molecule sensing. The nanostructured surface morphology of ZnO provides high sensitivity and room temperature deposition allows for a wide
D Peng et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 28(11), 1524-1533 (2011-08-11)
The feed drug additive carbadox is a suspected carcinogen and mutagen. To monitor effectively residues of carbadox in the edible tissues of food-producing animals, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) to detect quinoxaline-2-carboxylic acid, the marker residue of carbadox

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