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2,3-Diethyl-5-methylpyrazine

2,3-Diethyl-5-methylpyrazine Basic information
Product Name:2,3-Diethyl-5-methylpyrazine
Synonyms:2,3-diethyl-5-methyl-pyrazin;5-Methyl-2,3-diethylpyrazine;Pyrazine, 2,3-diethyl-5-methyl-;LABOTEST-BB LT00453041;FEMA 3336;FEMA NUMBER 3336;2,3-DIETHYL-5-METHYLPYRAZINE;2,3-DIETHYL-6-METHYLPYRAZINE
CAS:18138-04-0
MF:C9H14N2
MW:150.22
EINECS:242-024-6
Product Categories:Building Blocks;Chemical Synthesis;Alphabetical Listings;C-D;Flavors and Fragrances;Heterocyclic Building Blocks;PIPERIDINE;Pyrazine;Heterocyclic Compounds;Mono- & Polyalkylpyrazines;Pyrazines;pyrazine Flavor;Building Blocks;Heterocyclic Building Blocks
Mol File:18138-04-0.mol
2,3-Diethyl-5-methylpyrazine Structure
2,3-Diethyl-5-methylpyrazine Chemical Properties
Boiling point 95 °C (20 mmHg)
density 0.949 g/mL at 25 °C (lit.)
FEMA 3336 | 2,3-DIETHYL-5-METHYLPYRAZINE
refractive index n20/D 1.498(lit.)
Fp 176 °F
storage temp. 2-8°C
solubility Chloroform, Methanol
pka2?+-.0.10(Predicted)
form neat
color Clear Colourless
Specific Gravity0.950.949
Odorat 0.10 % in dipropylene glycol. musty nut skin earthy roasted hazelnut toasted potato dusty foliage vegetable
Odor Typemusty
Water Solubility SLIGHTLY SOLUBLE
JECFA Number777
LogP2.16
CAS DataBase Reference18138-04-0(CAS DataBase Reference)
NIST Chemistry ReferencePyrazine, 2,3-diethyl-5-methyl-(18138-04-0)
EPA Substance Registry SystemPyrazine, 2,3-diethyl-5-methyl- (18138-04-0)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36/37/39
RIDADR NA 1993 / PGIII
WGK Germany 3
TSCA Yes
HazardClass 3
PackingGroup III
HS Code 29339900
MSDS Information
ProviderLanguage
2,3-Diethyl-5-methylpyrazine English
SigmaAldrich English
ACROS English
ALFA English
2,3-Diethyl-5-methylpyrazine Usage And Synthesis
Chemical PropertiesCLEAR LIGHT YELLOW LIQUID
Chemical Properties2,3-Diethyl-5-methylpyrazine has a nutty, roasted, vegetable aroma.
OccurrenceReported to be present in coffee, filberts, potato products, Parmesan cheese, chicken, beef, pork, cocoa, peanuts, popcorn, sesame seed and corn tortillas.
Uses2,3-Diethyl-5-methylpyrazine is a volatile compound found in food such as almonds and swiss cheese.
PreparationBy condensation of 3,4-hexanedione with propylene diamine.
DefinitionChEBI: 2,3-Diethyl-5-methylpyrazine is a member of pyrazines.
Aroma threshold valuesDetection: 0.09 to 1 ppb
Taste threshold valuesTaste characteristics at 2.5 ppm: musty, toasted; nutty, potato, cocoa, earthy and dirty.
General Description2,3-Diethyl-5-methylpyrazine has been identified as a potent odorant in coffee sample and has been evaluated by gas chromatography-olfactometry of decreasing headspace samples.
2,3-Diethyl-5-methylpyrazine Preparation Products And Raw materials
Raw materials1,2-Diaminopropane-->3,4-Hexanedione
Preparation ProductsPyrazine
2-Methylpyrazine 2,3-DIETHYL-5-METHYLPYRAZINE-N4-OXIDE AKOS BBS-00001905 3-ETHYL-2-HEPTYL-5-METHYLPYRAZINE Methyl 2-hydroxyethyl cellulose TOSLAB 750622 2-Butanone Clauvanic Acid Impurity C (2-Methoxyethyl)benzene Diethyl ether Pyrazinamide Celiprolol Sulfachoropyrazine sodium Diethyl malonate 2,3-Dimethylpyrazine 5,6-DIETHYL-2,3-PYRAZINEDICARBONITRILE Glipizide 2,3-Diethyl-5-methylpyrazine
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