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2-Methoxy-3-isobutyl pyrazine

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2-Methoxy-3-isobutyl pyrazine Basic information

Product Name:
2-Methoxy-3-isobutyl pyrazine
Synonyms:
  • 2-METHOXY-3-ISOBUTYLPYRAZINE
  • 2-ISOBUTYL-3-METHOXYPYRAZINE
  • 2-ISOBUTYL-3(5/6)-METHOXYPYRAZINE
  • 2-methoxy-3-(2-methyl-propyl) pyrazine
  • 2-methoxy-3-(2-methylpropyl)-pyrazin
  • 2-methoxy-3-(2-methylpropyl)-Pyrazine
  • 3-methoxy-2-isobutylpyrazine
  • Pyrazine, 2-(2-methylpropyl)-3-methoxy
CAS:
24683-00-9
MF:
C9H14N2O
MW:
166.22
EINECS:
246-402-1
Product Categories:
  • 500 Series Drinking Water Methods
  • Drinking WaterEPA
  • Odor Standards
  • Chromatography
  • Environmental Standards
  • Alphabetical Listings
  • Pyrazine
  • Heterocyclic Compounds
  • Alkoxypyrazines
  • Mono- & Polyalkylpyrazines
  • Building Blocks
  • Heterocyclic Building Blocks
  • Flavors and Fragrances
  • I-L
  • Pyrazines
  • pyrazine Flavor
Mol File:
24683-00-9.mol
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2-Methoxy-3-isobutyl pyrazine Chemical Properties

Boiling point:
294.44°C (rough estimate)
Density 
0.99 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.49(lit.)
FEMA 
3132 | 2-ISOBUTYL-3-METHOXYPYRAZINE
Flash point:
176 °F
storage temp. 
room temp
form 
Liquid
pka
0.80±0.10(Predicted)
Specific Gravity
0.995
color 
Clear colorless
Odor
green-pepper odor FCT 2000
Odor Type
green
JECFA Number
792
LogP
2.62
CAS DataBase Reference
24683-00-9(CAS DataBase Reference)
NIST Chemistry Reference
Pyrazine, 2-methoxy-3-(2-methylpropyl)-(24683-00-9)
EPA Substance Registry System
Pyrazine, 2-methoxy-3-(2-methylpropyl)- (24683-00-9)
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Safety Information

Hazard Codes 
Xi,T,F
Risk Statements 
36/37/38-39/23/24/25-23/24/25-11
Safety Statements 
26-36-24/25-45-36/37-16-7
RIDADR 
UN 1230 3/PG 2
WGK Germany 
3
TSCA 
Yes
HS Code 
29339900

MSDS

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2-Methoxy-3-isobutyl pyrazine Usage And Synthesis

Description

2-Isobutyl-3-methoxypyrazine has an extremely powerful odor with a reported threshold value of 2 parts per trillion in water. Diluted water solutions exhibit a characteristic odor of green bell peppers. May be synthesized by condensation of leucine amide with glyoxal, followed by methylation with CH2H2.

Chemical Properties

2-Isobutyl-3-methoxypyrazine has a green bell pepper, green pea odor. Diluted water solutions of this compound exhibit a characteristic odor of green bell peppers.

Chemical Properties

CLEAR COLOURLESS LIQUID

Occurrence

Reported present in green bell pepper, coffee, galbanum oil, potato products, peas, grapes, lettuce, sherry, white wine, cocoa, beans, beetroot, passion fruit and okra.

Uses

2-Isobutyl-3-methoxypyrazine has been employed as a model odorant molecule during an electrochemical assay for the detection of odorant molecules based on a rat odorant-binding protein (rOBP3).

Preparation

By condensation of leucine amide with glyoxal followed by methylation with CH2H2

Aroma threshold values

Detection: 2 ppt to 10 ppb

General Description

2-Isobutyl-3-methoxypyrazine, a potent bell-pepper odourant, has been found to bind to cow olfactory mucosa homogenate.

2-Methoxy-3-isobutyl pyrazine Preparation Products And Raw materials

Raw materials

2-Methoxy-3-isobutyl pyrazineSupplier

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