CAS: 111-12-6
Methyl 2-heptynoate, often referred to by the common but chemically incorrect name Methyl Heptine Carbonate (MHC), is an organic compound characterized by its potent and distinct green, violet-leaf-like, waxy, and slightly metallic aroma. Chemically, it is the methyl ester of 2-heptynoic acid, not a carbonate. It appears as a colorless to pale yellow liquid and is highly valued in the fragrance industry for its unique olfactive profile.
Primarily used as a fragrance ingredient in the perfume industry. Its characteristic scent is employed to impart fresh, green, violet, fatty, and aldehydic notes to a wide array of products. It is a key component in creating 'violet leaf' accords and is also used in trace amounts in some flavor formulations for specific green or floral nuances.
Found in various perfumed products such as fine fragrances (perfumes, colognes), soaps, detergents, air fresheners, candles, and other personal care items. It is frequently used in floral, green, chypre, and aldehydic fragrance types. Less commonly, it might be used in minute quantities in certain food flavors (e.g., violet, cucumber, green tea).
Methyl 2-heptynoate is classified as an irritant and a potential sensitizer. It may cause skin irritation, serious eye irritation, and can lead to an allergic skin reaction in susceptible individuals. Inhalation of vapors should be avoided, and it should not be ingested. It is also considered toxic to aquatic life with long-lasting effects. Due to its sensitization potential, its use in fragrance products is often subject to restrictions and concentration limits set by regulatory bodies like IFRA.
Methyl 2-heptynoate; Methyl hept-2-ynoate; 2-Heptynoic acidmethyl ester; Methyl Heptine Carbonate (common misnomer/trade name); Heptine Carbonate (common misnomer/trade name); Methyl Heptincarbonate; MHC (common abbreviationoften for the misnomer).
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