S-prenyl thioisobutyrate
S-(3-methyl-2-buten-1-yl) 2-methylpropanethioate
 
Notes:
Constit. of buchu (Agathosma) spp.
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CAS Number: 53626-94-1Picture of molecule3D/inchi
FDA UNII: 7HQZ604M8H
Nikkaji Web: J390.559D
XlogP3-AA: 3.20 (est)
Molecular Weight: 172.29072000
Formula: C9 H16 O S
NMR Predictor: Predict (works with chrome or firefox)
Category: flavoring agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
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DG SANTE Food Flavourings: 12.196  S-prenyl thioisobutyrate
FEMA Number: 4760 S-prenyl thioisobutyrate
FDA:No longer provide for the use of these seven synthetic flavoring substances
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Physical Properties:
Appearance: colorless to pale yellow clear liquid (est)
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Specific Gravity: 1.10900 to 1.11500 @  25.00 °C.
Pounds per Gallon - (est).: 9.228 to  9.278
Refractive Index: 1.48300 to 1.48900 @  20.00 °C.
Boiling Point: 212.00 °C. @ 760.00 mm Hg (est)
Vapor Pressure: 0.200000 mmHg @ 25.00 °C. (est)
Flash Point: 160.00 °F. TCC ( 71.30 °C. ) (est)
logP (o/w): 3.510 (est)
Soluble in:
 alcohol
 water, 185.8 mg/L @ 25 °C (est)
Insoluble in:
 water
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Organoleptic Properties:
 
Odor Type: sulfurous
 
Odor Strength: high ,
recommend smelling in a 0.10 % solution or less
 
 sulfurous  fruity  tropical  durian  passion fruit  
Odor Description:
at 0.10 % in propylene glycol. 
sulfurous fruity tropical durian passion fruit
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
None found
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Suppliers:
Chemical Sources Association
Need This Item for Flavor/Food?: You can contact the CSA
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Safety Information:
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: flavoring agents
Recommendation for S-prenyl thioisobutyrate usage levels up to:
 not for fragrance use.
 
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.012 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 160 (μg/person/day)
Threshold of Concern:1800 (μg/person/day)
Structure Class: I
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 26
Click here to view publication 26
 average usual ppmaverage maximum ppm
baked goods: 0.010000.50000
beverages(nonalcoholic): 0.010000.50000
beverages(alcoholic): 0.010000.50000
breakfast cereal: --
cheese: --
chewing gum: 0.030001.00000
condiments / relishes: 0.010000.50000
confectionery froastings: 0.010000.50000
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: 0.010000.50000
hard candy: 0.010000.50000
imitation dairy: --
instant coffee / tea: --
jams / jellies: 0.010000.50000
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: 0.001000.50000
processed vegetables: 0.001000.50000
reconstituted vegetables: --
seasonings / flavors: 0.010000.05000
snack foods: 0.010000.05000
soft candy: 0.010000.05000
soups: 0.010000.05000
sugar substitutes: --
sweet sauces: --
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFSA, 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 (EFSA, 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): 0.200001.00000
Edible ices, including sherbet and sorbet (03.0): 0.400002.00000
Processed fruit (04.1): 0.300001.50000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): --
Confectionery (05.0): 0.400002.00000
Chewing gum (05.0): --
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.200001.00000
Bakery wares (07.0): 0.400002.00000
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): 0.200001.00000
Foodstuffs intended for particular nutritional uses (13.0): 0.400002.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.200001.00000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 0.400002.00000
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
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Safety References:
European Food Safety Athority(EFSA): Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
European Food Safety Authority (EFSA) reference(s):
Flavouring Group Evaluation 8 (FGE.08)[1]: Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical group 20
View page or View pdf
Flavouring Group Evaluation 74 (FGE.74)[1]: Consideration of Simple Aliphatic Sulphides and Thiols evaluated by JECFA (61st meeting) Structurally related to Aliphatic and Alicyclic Mono-, Di-, Tri-, and Polysulphides with or without Additional Oxygenated Functional Groups from Chemical Group 20 evaluated by EFSA in FGE.08 (2008)
View page or View pdf
Flavouring Group Evaluation 8, Revision 1 (FGE.08Rev1): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf
Flavouring Group Evaluation 91 (FGE.91): Consideration of simple aliphatic and aromatic sulphides and thiols evaluated by JECFA (53rd and 68th meetings) structurally related to aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups evaluated by EFSA in FGE.08Rev1 (2009)
View page or View pdf
Flavouring Group Evaluation 08 Rev2 (FGE.08 Rev2): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 8, Revision 3 (FGE.08Rev3): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 08, Revision 4 (FGE.08Rev4): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 08, Revision 5 (FGE.08Rev5): Aliphatic and alicyclic mono-, di-, tri-, and polysulphides with or without additional oxygenated functional groups from chemical groups 20 and 30
View page or View pdf
EPI System: View
AIDS Citations: Search
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EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 71438214
National Institute of Allergy and Infectious Diseases: Data
 S-(3-methyl-2-buten-1-yl) 2-methylpropanethioate
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References:
 S-(3-methyl-2-buten-1-yl) 2-methylpropanethioate
NIST Chemistry WebBook: Search Inchi
Pubchem (cid): 71438214
Pubchem (sid): 223369342
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Other Information:
(IUPAC): Atomic Weights of the Elements 2011 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
HMDB (The Human Metabolome Database): HMDB31699
FooDB: FDB008362
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
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Potential Blenders and core components note
 
For Odor
balsamic
 ethyl alpha-acetyl cinnamateFL/FR
isopropyl cinnamateFL/FR
caramellic
 strawberry furanone acetateFL/FR
ethereal
isopropyl formateFL/FR
isovaleraldehyde propylene glycol acetalFL/FR
floral
para-anisyl butyrateFL/FR
black currant bud concreteFL/FR
alpha-iononeFL/FR
 phenethyl acetateFL/FR
 rhodinyl butyrateFL/FR
 rhodinyl isobutyrateFL/FR
 rose butanoateFL/FR
 styralyl isobutyrateFL/FR
fruity
 allyl cyclohexyl propionateFL/FR
 butyl isobutyrateFL/FR
isobutyl isobutyrateFL/FR
 ethyl (Z)-4-heptenoateFL/FR
 heptyl butyrateFL/FR
 neocaspireneFL/FR
 strawberry furanone butyrateFL/FR
green
 ethyl (E,Z)-2,4-decadienoateFL/FR
 heptanal dimethyl acetalFL/FR
(Z)-3-hexen-1-yl (E)-2-hexenoateFL/FR
(Z)-3-hexen-1-yl isovalerateFL/FR
 hexyl hexanoateFL/FR
1-penten-3-olFL/FR
 phenoxyethyl isobutyrateFL/FR
herbal
 barosma betulina leaf oilFL/FR
(E)-6-methyl-3-hepten-2-oneFL/FR
 viridiflorolFL/FR
 blackberry thiophenoneFL/FR
 buchu mercaptanFL/FR
 lychee mercaptan acetateFL/FR
 passiflora acetateFL/FR
3-thiohexanolFL/FR
S-tropical 2-thiobutyrateFL/FR
4-tropical oxathianeFL/FR
tropical
cis-galbanum oxathianeFL/FR
 hexyl 2-methyl-3-pentenoateFL/FR
3-nonen-4-olideFL/FR
 passiflora edulis fruit extractFL/FR
 passiflora edulis fruit waterFL/FR
 tropical 3-thiobutyrateFL/FR
yeasty
2-octen-4-oneFL/FR
 
For Flavor
 
No flavor group found for these
isoamyl 3-methyl thiopropionateFL
 blackberry thiophenoneFL/FR
S-(2,5-dimethyl-3-furyl) ethane thioateFL
 ethyl 2-(methyl thio) acetateFL
 ethyl 2-methyl-2-(methyl thio) propionateFL
 ethyl 3-octenoateFL
 ethyl alpha-acetyl cinnamateFL/FR
 methyl 2-(methyl thio) acetateFL
(E)-6-methyl-3-hepten-2-oneFL/FR
 neocaspireneFL/FR
3-nonen-4-olideFL/FR
S-prenyl thioisovalerateFL
 sorbyl propionateFL
 styralyl isobutyrateFL/FR
S-tropical 2-thiobutyrateFL/FR
 viridiflorolFL/FR
 allyl thiohexanoateFL
3-mercapto-3-methyl-1-butyl acetateFL
anisic
para-anisyl butyrateFL/FR
balsamic
isopropyl cinnamateFL/FR
caramellic
 strawberry furanone acetateFL/FR
cheesy
 methyl ketonesFL
citrus
3-mercaptoheptyl acetateFL
creamy
 triacetinFL
floral
alpha-iononeFL/FR
 rhodinyl butyrateFL/FR
 rhodinyl isobutyrateFL/FR
fruity
 allyl cyclohexyl propionateFL/FR
isobutyl isobutyrateFL/FR
 butyl isobutyrateFL/FR
black currant bud concreteFL/FR
 ethyl (Z)-4-heptenoateFL/FR
(Z)-3-hexen-1-yl (E)-2-hexenoateFL/FR
 hexyl 2-methyl-3-pentenoateFL/FR
 hexyl hexanoateFL/FR
3-mercaptohexyl hexanoateFL
 methionyl butyrateFL
 passion fruit distillatesFL
isopropyl formateFL/FR
 rose butanoateFL/FR
 strawberry furanone butyrateFL/FR
4-tropical oxathianeFL/FR
isovaleraldehyde propylene glycol acetalFL/FR
green
 ethyl (E,Z)-2,4-decadienoateFL/FR
cis-galbanum oxathianeFL/FR
 heptanal dimethyl acetalFL/FR
 heptyl butyrateFL/FR
(Z)-3-hexen-1-yl isovalerateFL/FR
1-penten-3-olFL/FR
 phenoxyethyl isobutyrateFL/FR
herbal
 barosma betulina leaf oilFL/FR
 buchu oil fractionsFL
honey
 phenethyl acetateFL/FR
juicy
 lychee mercaptan acetateFL/FR
sulfurous
 buchu mercaptanFL/FR
S-ethyl thioacetateFL
 methyl 2-(methyl thio) butyrateFL
 methyl thiomethyl butyrateFL
3-thiohexanolFL/FR
 tropical 3-thiobutyrateFL/FR
tropical
 anacardium occidentale fruit pureeFL
3-mercaptohexyl butyrateFL
 passiflora acetateFL/FR
 passiflora edulis fruit extractFL/FR
 passiflora edulis fruit waterFL/FR
vegetable
2-octen-4-oneFL/FR
 
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Potential Uses:
None Found
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Occurrence (nature, food, other): note
 buchu
Search Trop  Picture
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Synonyms:
S-3-methyl but-2-enyl 2-methyl propane thioate
S-(3-methyl-2-buten-1-yl) 2-methylpropanethioate
S-3-methylbut-2-enyl 2-methylpropanethioate
 prenyl thioisobutyrate
 propanethioic acid, 2-methyl-, S-(3-methyl-2-buten-1-yl) ester
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