5-METHYLQUINOXALINE Chemical Properties

Melting point:

20-21 °C (lit.)

Boiling point:

120 °C/15 mmHg (lit.)

Density 

1.125 g/mL at 25 °C

FEMA 

3203 | 5-METHYLQUINOXALINE

refractive index 

n20/D 1.62(lit.)

Flash point:

>230 °F

storage temp. 

Sealed in dry,Room Temperature

pka

1.40±0.30(Predicted)

color 

Light yellow to Yellow to Orange

Specific Gravity

1.112

Odor

at 0.10 % in dipropylene glycol. toasted roasted corn nutty coffee burnt

Odor Type

nutty

JECFA Number

798

InChIKey

CQLOYHZZZCWHSG-UHFFFAOYSA-N

LogP

1.76

CAS DataBase Reference

13708-12-8(CAS DataBase Reference)

EPA Substance Registry System

Quinoxaline, 5-methyl- (13708-12-8)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

Hazard Note 

Irritant

TSCA 

Yes

HS Code 

29339900

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

5-METHYLQUINOXALINE Usage And Synthesis

Description

5-Methylquinoxaline has a burnt, roasted, nutty, roasted com, coffee odor.

Chemical Properties

5-Methylquinoxaline has a burnt, roasted, nutty, roasted corn, coffee odor

Chemical Properties

Amber liquid

Occurrence

Reported found in coffee and roasted almonds

Uses

5-Methylquinoxaline was used in the synthesis of 1,12-diphenyl-5-methyl-1,12,12a,12b-tetrahydrobis[1,2,4]triazolo[4,3-a:3′,4′-c]quinoxaline bis-cycloadducts.

Definition

ChEBI: A quinoxaline derivative in which the quinoxaline (1,4-naphthyridine) skeleton is substituted at C-5 with a methyl group.

Taste threshold values

Taste characteristics at 2 ppm: nutty, roasted, peanut and pyrazine-like with yeasty, corn-chip nuance.

General Description

5-Methylquinoxaline has been identified as one of the key volatile aroma compounds in roasted almonds{170] and roasted coffee.

5-METHYLQUINOXALINE(13708-12-8)Related Product Information

• 5-METHYLQUINOXALINE
• 6,7-DIMETHYL-2(1H)-QUINOXALINONE
• 2,3,6,7-TETRAMETHYLQUINOXALINE
• 2,6,7-Trichloro-3-(trifluoromethyl)quinoxaline
• 2,3-DIHYDROXY-6-METHYLQUINOXALINE,1,4-DIHYDRO-6-METHYLQUINOXALINE-2,3-DIONE,6-METHYLQUINOXALINE-2,3-DIOL
• 2,3,6-TRIMETHYLQUINOXALINE
• 6,7-Dichloro-3-(trifluoromethyl)quinoxalin-2(1H)-one
• 2,3-BIS(BROMOMETHYL)QUINOXALINE
• 2,3-DIMETHYL-QUINOXALINE-6-CARBOXYLIC ACID
• 6-METHYLQUINOXALINE
• 6,7-DIMETHYLQUINOXALINE
• 2,3-DIMETHYLQUINOXALINE
• 2,3-DICHLORO-6,7-DIMETHYLQUINOXALINE
• 3-HYDROXY-2-METHYLQUINOXALINE,2-Hydroxy-3-methylquinoxaline
• 2-Hydroxymethyl-3-methylquinoxaline 1,4-dioxide
• 2-(2-Hydroxyethoxycarbonyl)-3-methylquinoxaline 1,4-dioxide
• 2,3-DICHLORO-6-METHYLQUINOXALINE
• 3-Methylquinoxaline,2-METHYLQUINOXALINE