ChemicalBook--->CAS DataBase List--->27043-05-6

27043-05-6

27043-05-6 Structure

27043-05-6 Structure
IdentificationMore
[Name]

2-Ethyl-3,5-dimethylpyrazine
[CAS]

27043-05-6
[Synonyms]

2,6-DIMETHYL-3-ETHYLPYRAZINE
2-ETHYL-3,5(3,6)-DIMETHYLPYRAZINE MIXTURE
2-ETHYL-3,5(6)-DIMETHYLPYRAZINE
2-ETHYL-3,5-DIMETHYLPYRAZINE
2-ETHYL-3,5-DIMETHYLPYRAZINE AND 2-ETHYL-3,6-DIMETHYLPYRAZINE
2-ETHYL-3,5(OR 6)-DIMETHYLPYRAZINE
3,5-DIMETHYL-2-ETHYLPYRAZINE
3-ETHYL-2,5-DIMETHYLPYRAZINE AND 3-ETHYL-2,6-DIMETHYLPYRAZINE
DIMETHYLETHYLPYRAZINE
FEMA 3149
FEMA NUMBER 3149
2-ethyl-3,?-dimethyl-pyrazin
3-ethyl-3,6-dimethyl-Pyrazine
2-ethyl-3,-dimethylpyrazine
2-Ethyl-3,5(6)-dimethylpyrazine, 99.5+%
Pyrazine, 2-ethyl-3,?-dimethyl-
2-Ethyl-3,5(or 6)-dimethyrlpyrazine
[EINECS(EC#)]

248-182-2
[Molecular Formula]

C8H12N2
[MDL Number]

MFCD00047392
[Molecular Weight]

136.19
[MOL File]

27043-05-6.mol
Chemical PropertiesBack Directory
[Appearance]

clear light yellow liquid
[Boiling point ]

180-181 °C(lit.)
[density ]

0.965 g/mL at 25 °C(lit.)
[FEMA ]

3149
[refractive index ]

n20/D 1.5015(lit.)
[Fp ]

157 °F
[storage temp. ]

2-8°C
[form ]

neat
[color ]

Colorless to Light yellow
[Odor]

at 0.10 % in dipropylene glycol. burnt coffee nutty roasted woody
[Odor Type]

burnt
[JECFA Number]

775
[CAS DataBase Reference]

27043-05-6(CAS DataBase Reference)
[EPA Substance Registry System]

Pyrazine, 2-ethyl-3,?-dimethyl- (27043-05-6)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
[WGK Germany ]

3
[HS Code ]

2915.39.3500
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Ammonium phosphate dibasic-->2,3-Pentanedione-->Trimethyl-pyrazine
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

2-Ethyl-3,5-dimethylpyrazine(27043-05-6).msds
Hazard InformationBack Directory
[Chemical Properties]

2-Ethyl-3,(5 or 6)-dimethylpyrazine has a toasted nut, sweet woody, roasted cocoa odor.
[Chemical Properties]

clear light yellow liquid
[Occurrence]

Reported found in Burley and Virginia tobacco, cooked beef, Swiss cheese, roasted barley, cocoa products, coffee, meat, peanuts, filberts, pecans, popcorn, rum and whiskey, soy products, cooked potato, fried pork, beer, corn, corn tortillas, malt and cooked shrimps.
[Uses]

2-Ethyl-3,(5 or 6)-dimethylpyrazine is a component of the alarm pheromone of fire ant, Solenopsis invicta. 2-Ethyl-3,(5 or 6)-dimethylpyrazine has shown to attract the phyorid fyl, Pseudacteon tricuspis.
[Definition]

ChEBI: 2-Ethyl-3,5-dimethylpyrazine is a member of pyrazines.
[Preparation]

The 2-ethyl-3,5-dimethylpyrazine is obtained by alkylation of dimethyl-2, 6-pyrazine; the 2,5-dimethyl-3-ethylpyrazine is obtained by alkylation of 2,5-dimethylpyrazine with ethyllithium. A mixture of the two can be obtained by condensation of 2,3-pentanedione with propylenediamine. A mixture of the two is obtained from the side chain alkylation of trimethylpyrazine.
[Aroma threshold values]

Detection: 15 to 43 ppm in water. Aroma characteristics at 1.0%: peanut nutty, caramel, coffee, musty cocoa, popcorn, pyridine, graham sweet with roasted undertones
[Taste threshold values]

Taste characteristics at 5 ppm: peanut, nut skin, brown, roasted hazelnut with coffee and chocolate nuances.
Spectrum DetailBack Directory
[Spectrum Detail]

2-Ethyl-3,5-dimethylpyrazine(27043-05-6)1HNMR
2-Ethyl-3,5-dimethylpyrazine(27043-05-6)FT-IR
2-Ethyl-3,5-dimethylpyrazine(27043-05-6)IR
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