2-isobutyl-3-methyl pyrazine
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IUPAC name :2-methyl-3-(2-methylpropyl)pyrazine
InChI :InChI=1/C9H14N2/c1-7(2)6-9-8(3)10-4-5-11-9/h4-5,7H,6H2,1-3H3
InChIKey :ZHMIODDNZRIENW-UHFFFAOYAD
SMILES :CC1=NC=CN=C1CC(C)C
cas number :13925-06-9
(EINECS) number :237-693-6
fema number :3133
jecfa number :773
fl. number :14.044
molar refractivity :46.03 ± 0.3 cm3
parachor :386.7 ± 4.0 cm3
index of refraction :1.493 ± 0.02
surface tension :35.5 ± 3.0 dyne/cm
density :0.948 ± 0.06 g/cm3
polarizability :18.24 ± 0.5 10-24cm3
XlogP : 2.00
XlogP3 : 2.00
molecular weight : 150.2208600 (IUPAC)
formula :C9 H14 N2
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

Suppliers :
Fontarome :2-ISOBUTYL-3-METHYLPYRAZINE
Odor:  Herbaceous green earthy
Penta :2-isobutyl-3-methyl pyrazine
Sigma-Aldrich-SAFC :2-Isobutyl-3-methylpyrazine
≥99%, Kosher
TCI AMERICA :2-isobutyl-3-methylpyrazine
>98.0%(GC)
Tokyo Chemical Industry :2-isobutyl-3-methylpyrazine
>98.0%(GC)

organoleptics :
odor type :caramellic
odor strength :high ,
recommend smelling in a 0.10 % solution or less
odor description :
at 0.10 % in dipropylene glycol.  
green sugar syrup

properties :
appearence :pale yellow clear liquid
assay : 98.00 to 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :0.93600 to 0.94200 @ 25.00 °C.
pounds per gallon - calc. : 7.788 to 7.838
refractive index :1.48800 to 1.49800 @ 20.00 °C.
boiling point : 199.00 to 201.00 °C. @ 760.00 mm Hg
vapor pressure :0.11000 mm/Hg @ 25.00 °C.
flash point : 180.00  °F.  TCC  ( 82.22 °C. )
logP (o/w) : 1.96

safety :
Oral Toxicity(LD50) :
  Not determined
Dermal Toxicity(LD50) :
  Not determined
Inhalation Toxicity(LC50) :
  Not determined
 

safety in use :
Maximised Survey-derived Daily Intakes (MSDI-EU) :0.037 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA) :0.01 (μg/capita/day)
 
recommendation for 2-isobutyl-3-methyl pyrazine usage levels up to :
  0.5000 % in the fragrance concentrate.
recommendation for 2-isobutyl-3-methyl pyrazine usage levels up to :
  5.0000 ppm in the flavor.

safety references :
European Food Safety Athority(efsa) :Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
EPI System :view
Canada Domestic Sub. List :Yes
EPA Chem. Sub. Inventory : Yes
 
WGK Germany :3
 
 
 
 2-methyl-3-(2-methylpropyl)pyrazine
(EINECS) number :237-693-6
chemidplus :013925069
EPA Substance Registry Services :13925-06-9

references :
 2-methyl-3-(2-methylpropyl)pyrazine
fl. number :14.044
jecfa number :773
NIST Chemistry WebBook :2336132414
pubchem :169075

other :
VCF-Online: VCF Volatile Compounds in Food
FDA Everything Added to Food in the United States (EAFUS)View
synonyms :
2-isobutyl-3-methylpyrazine
2-methyl-3-(2-methyl propyl) pyrazine
2-methyl-3-(2-methylpropyl)pyrazine
2-methyl-3-isobutyl pyrazine

soluble in :
 alcohol
 water, 1600 mg/L @ 25C

insoluble in :
 water

(odor and/or flavor) blends with :
 acetaldehyde butyl phenethyl acetal
 acetaldehyde di-(Z)-3-hexen-1-yl acetal
 acetaldehyde dipropyl acetal
 acetaldehyde ethyl phenethyl acetal
2-acetyl-3-ethyl pyrazine
 allyl anthranilate
 allyl nonanoate
 anisyl propanal / methyl anthranilate schiff's base
 basil absolute sweet
2-isobutyl thiazole
alpha-campholenic aldehyde
 carvacryl methyl ether
 champaca flower oil
 citronella oil
(R)-(+)-beta-citronellol
(E)-citronellyl tiglate
 cocoa hexenal
3,6-cocoa pyrazine
 cumin acetaldehyde
isocyclocitral
neocyclocitral
 davana oil
 dibutyl sulfide
 dimethyl benzyl carbinol
2,4-dimethyl cyclohexyl methyl acetate
 diphenyl oxide
5-ethyl-2-methyl pyridine
2-ethyl-3-methoxypyrazine
2-ethyl-6-methyl pyrazine
 galbanum oil terpeneless
 galbanum oleoresin
 geranium absolute
 geranyl acetone
 green ether
 green pea pyrazine
 heptanol
 heptyl cinnamate
 herbal heptane
(E)-2-hexen-1-al
2-hexen-1-al
3-hexen-1-al
(E)-2-hexen-1-ol
(Z)-2-hexen-1-ol
2-hexen-1-ol
3-hexen-1-ol
(Z)-3-hexen-1-yl (Z)-3-hexenoate
(E)-2-hexen-1-yl acetate
(Z)-3-hexen-1-yl benzoate
(Z)-3-hexen-1-yl lactate
(Z)-3-hexen-1-yl methyl carbonate
(Z)-3-hexen-1-yl propionate
 hexoxyacetaldehyde dimethyl acetal
 hexyl heptanoate
 hop absolute
 hyacinth acetal
 ivy carbaldehyde
2,4-ivy carbaldehyde
3,5-ivy carbaldehyde
3,6-ivy carbaldehyde
 ivy carbaldehyde / methyl anthranilate schiff's base
 ivy dioxolane
 leaf acetal
 leafy acetal
 leafy oxime
 mate absolute
3-mercapto-2-pentanone
 methional
2-methoxy-3-propyl pyrazine
 methyl 2-(methyl thio) acetate
 methyl dimethyl anthranilate
 methyl heptine carbonate
 methyl octine carbonate
2-(methyl thio) acetaldehyde
4-(methyl thio) butanol
dextro,laevo-3-(methyl thio) butanone
3-methyl-3-pentanol
 narcissus absolute
 narcissus acetate
 neroli ketone
 neryl butyrate
(E,E)-2,4-nonadien-1-al
(E,Z)-2,6-nonadien-1-al
(E,Z)-2,6-nonadien-1-ol
(E,Z)-2,6-nonadien-1-yl acetate
 nutty pyrazine
 ocean propanal / methyl anthranilate schiff's base
 octanal dimethyl acetal
(E)-2-octen-1-al
(Z)-2-octen-1-al
(Z)-5-octen-1-yl propionate
 orangeflower absolute
 orangeflower water absolute
 parsley leaf oil
 petitgrain cedrat oil
 petitgrain combava oil
 phenethyl acetal
 phenethyl tiglate
 phenethyl valerate
 phenoxyacetaldehyde 50% in benzyl alcohol
 phenyl acetaldehyde diisobutyl acetal
2-phenyl propionaldehyde
3-phenyl propionaldehyde
2-phenyl propionaldehyde dimethyl acetal
ketoisophorone
 plectranthus glandulosus hook f. leaf oil cameroon
 potato butanone
 potato butyraldehyde
 propyl cinnamate
isopropyl phenyl acetate
isopropyl phenyl propionaldehyde
4-isopropyl quinoline
isopropyl quinoline
 propylene glycol acetone ketal
isopulegyl formate
 rhodinyl formate
 rose absolute
 rose leaf absolute
laevo-rose oxide
 styralyl acetate
 tetrahydrofurfuryl cinnamate
 tetrahydrofurfuryl propionate
 tobacco nonene
 violet decenol
 violet dienyne
 violet leaf absolute

(odor and/or flavor) used in :
 coffee
 green
 potato

natural occurrence in :
bacon fried bacon
coffee
potato products



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