propanethial S-oxide
lachrymatory factor
 
Notes:
Lachrymatory factor of onion (Allium cepa)
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CAS Number: 32157-29-2Picture of molecule3D/inchi
FDA UNII: 94Z73U61UH
Nikkaji Web: J1.802.424A
XlogP3-AA: 0.20 (est)
Molecular Weight: 90.14502000
Formula: C3 H6 O S
NMR Predictor: Predict (works with chrome or firefox)
Category: natural substances and extractives
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Google Patents: Search
US Patents: Search
EU Patents: Search
Pubchem Patents: Search
PubMed: Search
NCBI: Search
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Physical Properties:
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Soluble in:
 water, 7.549e+005 mg/L @ 25 °C (est)
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Organoleptic Properties:
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
None found
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Suppliers:
 None found
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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: natural substances and extractives
Recommendation for propanethial S-oxide usage levels up to:
 not for fragrance use.
 
Recommendation for propanethial S-oxide flavor usage levels up to:
 not for flavor use.
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Safety References:
EPI System: View
AIDS Citations: Search
Cancer Citations: Search
Toxicology Citations: Search
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 441491
National Institute of Allergy and Infectious Diseases: Data
 1-sulfinylpropane
Chemidplus: 0032157292
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References:
 1-sulfinylpropane
NIST Chemistry WebBook: Search Inchi
Pubchem (cid): 441491
Pubchem (cas): 32157-29-2
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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
CHEBI: View
KEGG (GenomeNet): C08389
HMDB (The Human Metabolome Database): HMDB40346
FooDB: FDB020071
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
None Found
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Occurrence (nature, food, other): note
 onion bulb
Search Trop  Picture
 scallion bulb
Search Trop  Picture
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Synonyms:
 lachrymatory factor
 propane, 1-sulfinyl-
1-sulfinylpropane
 thiopropanal S-oxide
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Articles:
Info: Propanethial S-oxide
PubMed: Enzyme That Makes You Cry-Crystal Structure of Lachrymatory Factor Synthase from Allium cepa.
PubMed: Jack bean urease inhibition by crude juices of Allium and Brassica plants. Determination of thiosulfinates.
PubMed: Investigation of volatiles emitted from freshly cut onions (Allium cepa L.) by real time proton-transfer reaction-mass spectrometry (PTR-MS).
PubMed: Identification of amino acid residues essential for onion lachrymatory factor synthase activity.
PubMed: Structure and bioactivity of thiosulfinates resulting from suppression of lachrymatory factor synthase in onion.
PubMed: First insights into the mode of action of a "lachrymatory factor synthase"--implications for the mechanism of lachrymator formation in Petiveria alliacea, Allium cepa and Nectaroscordum species.
PubMed: Applications of direct analysis in real time mass spectrometry (DART-MS) in Allium chemistry. 2-propenesulfenic and 2-propenesulfinic acids, diallyl trisulfane S-oxide, and other reactive sulfur compounds from crushed garlic and other Alliums.
PubMed: Bioactive S-alk(en)yl cysteine sulfoxide metabolites in the genus Allium: the chemistry of potential therapeutic agents.
PubMed: In vitro biogeneration of pure thiosulfinates and propanethial-S-oxide.
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