2-Quinoxalinecarboxylic acid

What is 2-Quinoxalinecarboxylic acid?

Yellowish-green crystalline powder

2-Quinoxalinecarboxylic Acid is a residue of Carbadox (C175825) which is an antimicrobial drug.

2-Quinoxalinecarboxylic acid is used to prepare N-(2-quinoxaloyl)-α-amino acids and bisquinoxaloyl (bisquinoxalinecarbonyl) derivatives

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

Melting point:	208 °C (dec.) (lit.)
Boiling point:	355.1±27.0 °C(Predicted)
Density	1.421±0.06 g/cm3(Predicted)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
solubility	DMSO (Slightly, Sonicated), Methanol (Slightly, Sonicated)
form	Powder, Crystals and/or Chunks
pka	2.91±0.30(Predicted)
color	Beige to yellow-green
CAS DataBase Reference	879-65-2(CAS DataBase Reference)

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.