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W324418

Sigma-Aldrich

2,3,5-Trimethylpyrazine

≥99%, FCC, FG

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Synonym(s):
Potato pyrazine
Empirical Formula (Hill Notation):
C7H10N2
CAS Number:
Molecular Weight:
122.17
FEMA Number:
3244
EC Number:
Council of Europe no.:
735
MDL number:
PubChem Substance ID:
Flavis number:
14.019
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FCC

Assay

≥99%

refractive index

n20/D 1.5040 (lit.)

bp

171-172 °C (lit.)

density

0.979 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

cocoa; musty; nutty; peanut; potato

SMILES string

Cc1cnc(C)c(C)n1

InChI

1S/C7H10N2/c1-5-4-8-6(2)7(3)9-5/h4H,1-3H3

InChI key

IAEGWXHKWJGQAZ-UHFFFAOYSA-N

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This Item
W324426W313602W330604
2,3-Diethylpyrazine ≥98%, FG

Sigma-Aldrich

W313602

2,3-Diethylpyrazine

grade

FG, Fragrance grade, Halal, Kosher

grade

FG, Fragrance grade, Halal, Kosher, natural

grade

FG, Fragrance grade, Halal, Kosher

grade

FG, Fragrance grade, Halal, Kosher

agency

follows IFRA guidelines, meets purity specifications of JECFA

agency

follows IFRA guidelines

agency

follows IFRA guidelines, meets purity specifications of JECFA

agency

follows IFRA guidelines, meets purity specifications of JECFA

assay

≥99%

assay

≥95%

assay

≥98%

assay

≥97%

refractive index

n20/D 1.5040 (lit.)

refractive index

n20/D 1.5040 (lit.)

refractive index

n20/D 1.5 (lit.)

refractive index

n20/D 1.527 (lit.)

bp

171-172 °C (lit.)

bp

171-172 °C (lit.)

bp

180-182 °C (lit.)

bp

96-99 °C/20 mmHg (lit.)

General description

2,3,5-Trimethylpyrazine is a volatile flavor constituent of roasted coffee beans, cooked rice and soy paste.

Pictograms

FlameExclamation mark

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

129.2 °F - closed cup

Flash Point(C)

54 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Characterization of the volatile substances and aroma components from traditional soypaste.
Zhang Y, et al.
Molecules (Basel), 15(5), 3421-3427 (2010)
Analysis of roasted coffee bean volatiles by using comprehensive two-dimensional gas chromatography?time-of-flight mass spectrometry
Ryan D, et al.
Journal of Chromatography A, 1054(1), 57-65 (2004)
Volatile flavor components of cooked rice
Yajima I, et al.
Agricultural and Biological Chemistry, 42(6), 1229-1233 (1978)
Joachim Morrens et al.
Neuron, 106(1), 142-153 (2020-02-07)
Dopamine neurons mediate the association of conditioned stimuli (CS) with reward (unconditioned stimuli, US) by signaling the discrepancy between predicted and actual reward during the US. Some theoretical models suggest that learning is also influenced by the salience or associability
Deng-Rong Xiao et al.
Scientific reports, 5, 17120-17120 (2015-11-27)
The aroma attributes of sulfurous, mushroom and earthy are the most important characteristics of the aroma of Tuber melanosporum. However, these three aroma attributes are absent in the T. melanosporum fermentation system. To improve the quality of the aroma, repeated

Protocols

GC Analysis of Volatiles in Roasted Coffee Beans on Omegawax® after SPME using a 50/30 µm DVB/Carboxen/PDMS Fiber

-Cymene; 2,5-Dimethylpyrrole; Acetoin, ≥96%, FCC, FG; 2,5-Dimethylpyrazine; 2,6-Dimethylpyrazine; 2-Ethylpyrazine, ≥98%, FG; 2,3-Dimethylpyrazine; 4-Heptanone; 3-Ethylpyridine; 2,3,5-Trimethylpyrazine; Furfural; Pyrrole; Furfuryl acetate; Linalool; Linalyl acetate; 5-Methylfurfural; γ-Butyrolactone; 2-Acetyl-1-methylpyrrole; Furfuryl alcohol; 2-Acetylpyrrole; Pyrrole-2-carboxaldehyde

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