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4-methyl 4-mercaptopentan-2-one 1% solution

Chemical Structure

General Material Information

Preferred name 4-methyl 4-mercaptopentan-2-one 1% solution
Trivial Name 4-Mercapto-4-methyl-2-pentanone
Short Description 4-mercapto-4-methyl-2-pentanone 1% in pg
Formula C6 H12 O S
CAS Number 19872-52-7
FEMA Number 3997
Flavis Number 12.169
ECHA Number 243-386-8
FDA UNII 9524RG5ZQL
Nikkaji Number J104.455I
MDL MFCD00085208
COE Number 11500
xLogP3-AA 0.80 (est)
NMR Predictor External link
JECFA Food Flavoring 1293 4-mercapto-4-methyl-2-pentanone 1% in pg
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 19872-52-7 ; 4-MERCAPTO-4-METHYL-2-PENTANONE
Synonyms
  • cat ketone 1% in pg
  • 2-mercapto-2-methylpentan-4-one 1% solution
  • 4-mercapto-4-methyl-2-pentanone 1% in pg
  • 4-mercapto-4-methyl-2-pentanone natural
  • 4-mercapto-4-methyl-2-pentanone, 1% in PG natural
  • mercapto-4-methylpentan-2-one 1% in pg
  • 4-mercapto-4-methylpentan-2-one 1% in PG
  • 4-mercapto-4-methylpentan-2-one 1% solution
  • 4-methyl 4-mercaptopentan-2-one (1% in propylene glycol)
  • 4-methyl 4-mercaptopentan-2-one 1% in propylene glycol
  • 4-methyl-4-mercapto-2-pentanone
  • 4-methyl-4-mercaptopentan-2-one
  • 4-methyl-4-mercaptopentan-2-one 1% in pg
  • 4-methyl-4-mercaptopentan-2-one neat
  • 4-methyl-4-mercaptopentan-2-one pure
  • 2-methyl-4-oxopentane-2-thiol 1% in pg
  • 4-methyl-4-sulfanylpentan-2-one 1% solution
  • 4-methyl-4-thiolpentan-2-one 1% solution
  • methylmercaptopentanone
  • pentan-2-one, 4-mercapto-4-methyl- 1% solution
  • 2-pentanone, 4-mercapto-4-methyl- 1% solution
  • 4-methyl-4-sulfanylpentan-2-one
  • 2-Pentanone, 4-mercapto-4-methyl-
  • 4-Mercapto-4-methyl-2-pentanone
  • 4-Methyl-4-mercapto-2-pentanone
  • 2-Mercapto-2-methylpentan-4-one
  • 4MMP
  • 4-Sulfanyl-4-methylpentan-2-one

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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Literature & References

4-methyl-4-sulfanylpentan-2-one
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:19872-52-7
Pubchem (cid):88290
Pubchem (sid):135046704
Flavornet:19872-52-7
Publications by PubMed
Simple Quantitative Determination of Potent Thiols at Ultratrace Levels in Wine by Derivatization and High-Performance Liquid Chromatography-Tandem Mass Spectrometry (HPLC-MS/MS) Analysis.
Development of a new stir bar sorptive extraction method for the determination of medium-level volatile thiols in wine.
Development of a routine analysis of 4-mercapto-4-methylpentan-2-one in wine by stable isotope dilution assay and mass tandem spectrometry.
Direct accurate analysis of cysteinylated and glutathionylated precursors of 4-mercapto-4-methyl-2-pentanone and 3-mercaptohexan-1-ol in must by ultrahigh performance liquid chromatography coupled to mass spectrometry.
Ethyl propiolate derivatisation for the analysis of varietal thiols in wine.
Influence of volatile thiols in the development of blackcurrant aroma in red wine.
Sensory and chemical characterisation of the aroma of Prieto Picudo rosé wines: The differential role of autochthonous yeast strains on aroma profiles.
Volatile compounds responsible for aroma of Jutrzenka liquer wine.
The yeast IRC7 gene encodes a β-lyase responsible for production of the varietal thiol 4-mercapto-4-methylpentan-2-one in wine.
Engineering Saccharomyces cerevisiae to release 3-Mercaptohexan-1-ol during fermentation through overexpression of an S. cerevisiae Gene, STR3, for improvement of wine aroma.
Straightforward synthesis of deuterated precursors to demonstrate the biogenesis of aromatic thiols in wine.
Evolution of S-cysteinylated and S-glutathionylated thiol precursors during oxidation of Melon B. and Sauvignon blanc musts.
Validation of a nanoliquid chromatography-tandem mass spectrometry method for the identification and the accurate quantification by isotopic dilution of glutathionylated and cysteinylated precursors of 3-mercaptohexan-1-ol and 4-mercapto-4-methylpentan-2-one in white grape juices.
New factor characterizing the in-mouth release of odorants (volatile thiols): compositional changes in odorants exhaled from the human nose during drinking.
Impact of oxygen dissolved at bottling and transmitted through closures on the composition and sensory properties of a Sauvignon Blanc wine during bottle storage.
Selective preconcentration of volatile mercaptans in small SPE cartridges: quantitative determination of trace odor-active polyfunctional mercaptans in wine.
Novel character impact compounds in Yuzu (Citrus junos Sieb. ex Tanaka) peel oil.
The influence of yeast on the aroma of Sauvignon Blanc wine.
First identification of 4-S-glutathionyl-4-methylpentan-2-one, a potential precursor of 4-mercapto-4-methylpentan-2-one, in Sauvignon Blanc juice.
Improved solid-phase extraction procedure for the isolation and in-sorbent pentafluorobenzyl alkylation of polyfunctional mercaptans. Optimized procedure and analytical applications.
Comparison of 4-Mercapto-4-methylpentan-2-one contents in hop cultivars from different growing regions.
Engineering volatile thiol release in Saccharomyces cerevisiae for improved wine aroma.
Quantitative determination of wine polyfunctional mercaptans at nanogram per liter level by gas chromatography-negative ion mass spectrometric analysis of their pentafluorobenzyl derivatives.
Modulation of volatile sulfur compounds by wine yeast.
Occurrence of polyfunctional thiols in fresh lager beers.
Automated analysis of 2-methyl-3-furanthiol and 3-mercaptohexyl acetate at ng L(-1) level by headspace solid-phase microextracion with on-fibre derivatisation and gas chromatography-negative chemical ionization mass spectrometric determination.
Influence of fermentation temperature on volatile thiols concentrations in Sauvignon blanc wines.
Genetic determinants of volatile-thiol release by Saccharomyces cerevisiae during wine fermentation.
Influence of manufacturing conditions and crop season on the formation of 4-mercapto-4-methyl-2-pentanone in Japanese green tea (sen-cha).
Variation in 4-mercapto-4-methyl-pentan-2-one release by Saccharomyces cerevisiae commercial wine strains.
Characterization of the aroma of a wine from maccabeo. Key role played by compounds with low odor activity values.
Gas chromatography-olfactometry and chemical quantitative study of the aroma of six premium quality spanish aged red wines.
Combinatorial synthesis and sensorial properties of mercapto primary alcohols and analogues.
Quantitative determination of sulfur-containing wine odorants at sub parts per billion levels. 2. Development and application of a stable isotope dilution assay.
Identification of potent odorants in different green tea varieties using flavor dilution technique.
Aroma composition changes in early season grapefruit juice produced from thermal concentration.
Evaluation of key aroma compounds in hand-squeezed grapefruit juice (Citrus paradisi Macfayden) by quantitation and flavor reconstitution experiments.
Measuring the aromatic potential of Vitis vinifera L. Cv. Sauvignon blanc grapes by assaying S-cysteine conjugates, precursors of the volatile thiols responsible for their varietal aroma.
Identification of potent odorants in Japanese green tea (Sen-cha).
Odor similarity between stress-inducing odorants in wistar rats.
Catty odours in food: confirmation of the identity of 4-mercapto-4-methylpentan-2-one by GC-MS.

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
FDA Substances Added to Food (formerly EAFUS):View
CHEBI:View
HMDB (The Human Metabolome Database):HMDB31519
FooDB:FDB008119
YMDB (Yeast Metabolome Database):YMDB01415
Export Tariff Code:2930.90.9999
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View
Wikipedia:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 132.22584533691
Specific gravity @ 25 °C
Pounds per Gallon 8.587 to 8.629
Refractive Index 1.431 to 1.437 @ 20 °C
Vapor Pressure 0.843 mmHg @ 25 °C
Flash Point TCC Value 63.7 °C TCC
logP (o/w) 1.432 est
Solubility
alcohol Yes
water Yes
water, 1.097e+004 mg/L @ 25 °C (est) Yes

Organoleptic Properties

Odor Type: Sulfurous
sulfurous, meaty, catty, currant bud black currant bud, green, fruity
General comment At 0.10 % in propylene glycol. sulfurous meaty catty black currant

Occurrences

Potential Uses

Applications
Odor purposes Citrus, Currant black currant, Wine
Flavoring purposes Fruit tropical fruit

Safety Information

Safety information

European information :
Most important hazard(s):
Xi - Irritant
R 11 - Highly flammable.
R 36/37/38 - Irritating to eyes, respiratory system, and skin.
S 02 - Keep out of the reach of children.
S 16 - Keep away from sources of ignition - No Smoking.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
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

Safety in use information

Category:
flavor and fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for 4-methyl 4-mercaptopentan-2-one 1% solution usage levels up to:
0.0500 % in the fragrance concentrate.
Maximised Survey-derived Daily Intakes (MSDI-EU): 3.70 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.02 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 2.9 (μg/person/day)
Threshold of Concern:90 (μg/person/day)
Structure Class: III
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: 20
Click here to view publication 20
average usual ppmaverage maximum ppm
baked goods: 5.0000010.00000
beverages(nonalcoholic): 0.100001.00000
beverages(alcoholic): 0.500005.00000
breakfast cereal: 0.100000.50000
cheese: --
chewing gum: 10.0000030.00000
condiments / relishes: --
confectionery froastings: 0.500005.00000
egg products: --
fats / oils: --
fish products: --
frozen dairy: 2.0000020.00000
fruit ices: 1.0000010.00000
gelatins / puddings: 0.500005.00000
granulated sugar: --
gravies: --
hard candy: 5.0000025.00000
imitation dairy: --
instant coffee / tea: 0.200002.00000
jams / jellies: 1.000005.00000
meat products: --
milk products: 0.100001.00000
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: 1.000005.00000
soups: --
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): 0.002000.01700
Fats and oils, and fat emulsions (type water-in-oil) (02.0): --
Edible ices, including sherbet and sorbet (03.0): 0.003000.03400
Processed fruit (04.1): --
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): 0.003000.01700
Confectionery (05.0): 0.017000.08500
Chewing gum (05.3): 0.034000.10000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.000300.00200
Bakery wares (07.0): 0.017000.03400
Meat and meat products, including poultry and game (08.0): 0.000300.00200
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): --
Eggs and egg products (10.0): --
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): --
Foodstuffs intended for particular nutritional uses (13.0): --
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.000300.00300
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 0.002000.01700
Ready-to-eat savouries (15.0): --
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0): --

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 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 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

Scientific Opinion on Flavouring Group Evaluation 74, Revision 1 (FGE.74Rev1): Consideration of Simple Aliphatic Sulphides and Thiols evaluated by the JECFA (53rd and 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.08Rev1 (2009)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 74, Revision 2 (FGE.74Rev2): Consideration of Simple Aliphatic Sulphides and Thiols evaluated by the JECFA (53rd and 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.08Rev3 (2011)
View page or View pdf

Statement on List of Representative Substances for Testing. The current Statement lays down a list of substances in sub-groups with representative substances for which additional data are required prior to their evaluation through the Procedure (Regulation (EC) No 1565/2000).
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 91, Revision 2 (FGE.91Rev2): Consideration of simple aliphatic and aromatic sulphides and thiols evaluated by the 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.08Rev5 (2012)
View page or View pdf

EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 74, Revision 4 (FGE.74Rev4): Consideration of aliphatic sulphides and thiols evaluated by JECFA (53rd and 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.08Rev5
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 91, Revision 3 (FGE.91Rev3): consideration of aliphatic, aromatic and a,ß-unsaturated sulfides and thiols evaluated by JECFA (53rd, 61st, 68th and 76th meetings), structurally related to substances in FGE.08Rev5
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):19872-52-7
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :88290
National Institute of Allergy and Infectious Diseases:Data
WISER:UN 1170
WGK Germany:3
4-methyl-4-sulfanylpentan-2-one
Chemidplus:0019872527