4-methyl-2-(1-propenyl)-1,3-oxathiane

4-methyl-2-(1-propenyl)-1,3-oxathiane is an organosulfur compound characterized by the presence of an oxathiane ring system substituted by methyl and propenyl groups. It is recognized for its distinctive garlic odor with additional green, starchy, peppery, balsamic, mossy, and woody cabbage nuance notes when diluted at 0.10% in propylene glycol. The compound is sometimes referenced under the same trivial name, 4-methyl-2-(1-propenyl)-1,3-oxathiane, without widely used synonyms. Interested professionals can refer to the linked PubChem entry for chemical structure and identifiers. This material is primarily studied for informational purposes and does not currently serve as an active ingredient in commercial fragrance or flavor formulations.

This compound belongs to the class of sulfur-containing heterocycles which can naturally occur or be synthesized to study odor profiles associated with garlic and related notes. Despite its characteristic odor profile, 4-methyl-2-(1-propenyl)-1,3-oxathiane is not intended for application in fragrances or flavors and thus has no established commercial use in these sectors. Regulatory frameworks such as REACH (EU) encompass chemical safety evaluation for compounds like this in research contexts. Its role remains investigational, providing insight into sulfurous aroma chemistry rather than serving as a formulation ingredient.

4-methyl-2-(1-propenyl)-1,3-oxathiane exhibits a chemical structure that incorporates both sulfur and oxygen heteroatoms within a six-membered oxathiane ring. These structural features contribute to its notable garlic-like odor and the molecule's volatility characteristics. When diluted in propylene glycol at low concentrations, the compound releases complex odor notes including green and woody nuances alongside sulfurous aromas. No detailed toxicological data is presently available, and standard physical parameters such as melting point and boiling point remain undocumented in public resources. This lack of data, along with absence of classification under OSHA HCS (29 CFR 1910), implies limited current application and a need for caution in direct exposure scenarios.

None found

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

Safety in use information

Category:
information only not used for fragrances or flavors
Recommendation for 4-methyl-2-(1-propenyl)-1,3-oxathiane usage levels up to:
	not for fragrance use.
Recommendation for 4-methyl-2-(1-propenyl)-1,3-oxathiane flavor usage levels up to:
	not for flavor use.

Safety references

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