2-isopropyl-3-(methyl thio) pyrazine
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IUPAC name :2-methylsulfanyl-3-propan-2-ylpyrazine
InChI :InChI=1/C8H12N2S/c1-6(2)7-8(11-3)10-5-4-9-7/h4-6H,1-3H3
InChIKey :MUSIVZZZFRJWGI-UHFFFAOYAG
SMILES :CC(C)C1=NC=CN=C1SC
cas number :67952-59-4
(EINECS) number :267-913-6
coe number :11342
fl. number :14.122
molar refractivity :48.85 ± 0.4 cm3
parachor :403.5 ± 6.0 cm3
index of refraction :1.539 ± 0.03
surface tension :45.0 ± 5.0 dyne/cm
density :1.08 ± 0.1 g/cm3
polarizability :19.36 ± 0.5 10-24cm3
XlogP : 1.70
molecular weight : 168.2592800 (IUPAC)
formula :C8 H12 N2 S
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

Suppliers :
Penta :2-isopropyl-3-(methylthio) pyrazine

organoleptics :
odor strength :very high ,
recommend smelling in a 0.01 % solution or less
odor description :
at 0.01 % in propylene glycol.  
powerful green vegetable

properties :
appearence :pale yellow solid
assay : 95.00 to 100.00 %   
Food Chemicals Codex Listed :No
melting point : 108.00 °C. @ 760.00 mm Hg
boiling point : 317.00 °C. @ 760.00 mm Hg
vapor pressure :0.04300 mm/Hg @ 25.00 °C.
flash point : 216.00  °F.  TCC  ( 102.22 °C. )
logP (o/w) : 2.60

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) :0.061 (μg/capita/day)
modified Theoretical Added Maximum Daily Intake (mTAMDI) :270 (μg/person/day)
Threshold of concern :90 (μg/person/day)
 
recommendation for 2-isopropyl-3-(methyl thio) pyrazine usage levels up to :
 not for fragrance use.
 
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFFA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFFA, 2002i).
Note : mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
 average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0) : 0.400002.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0) : 0.100000.50000
Edible ices, including sherbet and sorbet (03.0) : 0.400002.00000
Processed fruit (04.1) : 0.400002.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : --
Confectionery (05.0) : 1.000005.00000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : 0.200001.00000
Bakery wares (07.0) : 1.000005.00000
Meat and meat products, including poultry and game (08.0) : 0.100000.40000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : 0.100000.40000
Eggs and egg products (10.0) : --
Sweeteners, including honey (11.0) : --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : 0.100000.50000
Foodstuffs intended for particular nutritional uses (13.0) : 0.200001.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : 0.200001.00000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : 1.000005.00000
Ready-to-eat savouries (15.0) : 1.000005.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) : 0.200001.00000

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
EPA Chem. Sub. Inventory : Yes
 
 
 
 2-methylsulfanyl-3-propan-2-ylpyrazine
(EINECS) number :267-913-6
chemidplus :067952594
EPA Substance Registry Services :67952-59-4

references :
 2-methylsulfanyl-3-propan-2-ylpyrazine
fl. number :14.122
NIST Chemistry WebBook :2892407142
pubchem :683513

other :
VCF-Online: VCF Volatile Compounds in Food
synonyms :
2-(1-methyl ethyl)-3-(methyl thio) pyrazine
2-(methyl thio)-3-isopropyl pyrazine
2-methylsulfanyl-3-propan-2-ylpyrazine
2-isopropyl-3-methyl thiopyrazine

soluble in :
 alcohol

insoluble in :
 water

stability :
 stable in most media

(odor and/or flavor) blends with :
 acetal
 acetaldehyde butyl phenethyl acetal
 acetaldehyde di-(Z)-3-hexen-1-yl acetal
 acetaldehyde ethyl phenethyl acetal
2-acetyl-3-methyl pyrazine
(E)-aconitic acid
 allyl anthranilate
 asafetida oil
 basil absolute sweet
 benzothiazole
isobutyl mercaptan
2-(2-butyl)-4,5-dimethyl-3-thiazoline
 caramel pentadione
 coriander heptenol
 cortex pyridine
neocyclocitral
 cyclopentyl mercaptan
(E)-2-decen-1-al
3,5-diethyl-2-methyl pyrazine
 dihydroxyacetophenone
 diisopropyl sulfide
 dimethyl disulfide
 dimethyl sulfide
4,5-dimethyl-2-ethyl-3-thiazoline
2-ethoxythiazole
 ethyl (E)-2-hexenoate
 ethyl 3-(furfuryl thio) propionate
 ethyl pyruvate
2-ethyl-4,5-dimethyl oxazole
 flower hexene
 furfuryl methyl sulfide
1-furfuryl pyrrole
 galbanum oil terpeneless
 geranium absolute
 geranium thiazole
 grapefruit menthane
 hazelnut pyrazine
(E,E)-2,4-heptadien-1-al
(E)-2-hepten-1-al
(Z)-4-hepten-1-al
 heptyl cinnamate
 herbal heptane
 hexanal propylene glycol acetal
(E)-2-hexen-1-al
(E)-4-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
4-hexen-1-ol
(Z)-3-hexen-1-yl (E)-crotonate
(E)-2-hexen-1-yl acetate
(Z)-3-hexen-1-yl benzoate
(Z)-3-hexen-1-yl formate
(Z)-3-hexen-1-yl lactate
(Z)-3-hexen-1-yl methyl carbonate
(Z)-3-hexen-1-yl phenyl acetate
(Z)-3-hexen-1-yl pyruvate
(Z)-3-hexen-1-yl tiglate
 hexoxyacetaldehyde dimethyl acetal
 hexyl hexanoate
 jalapeno oleoresin
 leaf acetal
 leafy acetal
 lychee mercaptan acetate
 melon nonenoate
3-mercapto-3-methyl butanol
3-mercaptohexyl butyrate
 mesityl oxide
 methional
 methyl 2-methyl-3-furyl disulfide
 methyl 3-(methyl thio) propionate
 methyl benzyl disulfide
 methyl furfuryl disulfide
 methyl heptine carbonate
 methyl octanoate
2-methyl thiazole
2-methyl thio-3,5 or 6-methyl pyrazine
2-(methyl thio) acetaldehyde
4-(methyl thio) butanol
3-(methyl thio) hexanol
 methyl thiomethyl butyrate
2-methyl-1,3-dithiolane
3-(5-methyl-2-furyl) butanal
2-methyl-3-(methyl thio) pyrazine
3-methyl-3-pentanol
5-methyl-5-hexen-2-one
2-methyl-5-methoxythiazole
2,6-nonadien-1-ol
(E,Z)-2,6-nonadien-1-yl acetate
(Z)-6-nonen-1-ol
2,4-octadien-1-al
 octanal dimethyl acetal
 octanoic acid
(E)-2-octen-1-al
(Z)-2-octen-1-al
2-octen-1-ol
(Z)-5-octen-1-yl propionate
1-octen-3-ol
(E)-2-octenoic acid
4-penten-1-yl acetate
1-penten-3-ol
2-pentyl furan
 petitgrain combava oil
3-phenyl propionaldehyde
 potato butanone
isopropyl phenyl propionaldehyde
2-propyl pyrazine
3-propyl pyridine
2-isopropyl pyridine
 propyl thioacetate
isopropyl tiglate
 propylene glycol acetone ketal
isopulegyl formate
 radish isothiocyanate
 rose leaf absolute
 rosemary oleoresin
 styralyl acetate
 tetrahydrofurfuryl alcohol
3-tetrahydrothiophenone
2,4,5-trimethyl oxazole
2,4,5-trimethyl thiazole
 tropical thiazole
 vinyl sulfurol
 yeast thiazoline

(odor and/or flavor) used in :
 coriander
 fenugreek
 green
 vegetable

natural occurrence in :
coriander
fenugreek
ragi
sesame seed roasted



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