2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde

2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde is an organic compound belonging to the aldehyde chemical family. It features a structural motif with a propionaldehyde group attached to an octahydro-4,7-methanoindenyl moiety. This compound exhibits a notable citrus odor characterized by strong grapefruit and offensive sulphury notes at pure concentration, which distinguishes it within the group of aromatic aldehydes. The compound's molecular structure places it in a category related to bicyclic aldehydes, which sometimes contribute unique sensory characteristics. Although precise sourcing information is limited, such compounds are generally synthesized chemically rather than derived from natural extractions. This substance is documented in reference chemical databases like PubChem for scientific and regulatory purposes. It is not employed for flavoring or fragrance due to its pronounced and potentially undesirable odor qualities.

There is no documented natural biological occurrence for 2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde. Its chemical structure indicates a synthetic origin, likely prepared for investigational or research applications. The compound is not applied in commercial flavor or fragrance formulations as indicated by regulatory observations. According to recommendations under usage level guidelines such as those from FEMA (US), it is not authorized for use in fragrances or as a flavoring agent. Thus, its applications are limited to information-only purposes, potentially supporting academic or industrial chemical studies on odorant structure-activity relationships or safety evaluations. This exclusion from direct consumer product use underscores the need for caution and confirms its status as a specialized research chemical rather than a commercial additive.

2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde is characterized by its bicyclic hydrocarbon-based aldehyde structure, which influences its volatility and odor profile. The molecular framework suggests moderate volatility appropriate for vapor-phase odor detection, congruent with its strong citrus and grapefruit notes. Its stability in formulations may be limited due to the reactive aldehyde functional group, which can undergo oxidation or polymerization under certain conditions. The presence of the octahydro-methanoindenyl moiety contributes rigidity and hydrophobicity, affecting solubility and interaction with solvents or carrier matrices. Though specific melting and boiling point data are absent, similar bicyclic aldehydes tend to have melting points at or below room temperature and boiling points ranging in the low hundreds of degrees Celsius. These properties significantly influence potential formulation considerations, which are constrained by the compound's sensory characteristics and regulatory exclusions.

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 2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde usage levels up to:
	not for fragrance use.
Recommendation for 2-(octahydro-4,7-methanoinden-5-yl)-propionaldehyde flavor usage levels up to:
	not for flavor use.

Safety references

None found