Description

(-)-Menthyl Propionate CAS NO 4951-48-8 is a high-purity, chiral ester derived from (-)-menthol, valued for its distinctive, clean minty-herbaceous odor profile and cooling sensation. This compound is a critical intermediate and functional ingredient for creating sophisticated and natural-feeling organoleptic experiences. It is essential for manufacturers in the flavor and fragrance, personal care, and pharmaceutical industries seeking to develop premium products with enhanced sensory characteristics and stability.

Application

• Flavor & Fragrance Industry: A key building block for synthesizing complex mint, herbal, and fruity flavor compounds and fragrance ingredients.
• Oral Care Products: Used in toothpastes, mouthwashes, and chewing gums to impart a long-lasting, fresh cooling and minty flavor.
• Pharmaceuticals: Serves as a chiral intermediate in the synthesis of active pharmaceutical ingredients (APIs) and as a flavoring agent in medicated lozenges and syrups.
• Personal Care & Cosmetics: Incorporated into creams, lotions, balms, and shaving products to provide a refreshing cooling effect and pleasant aroma.
• Tobacco Flavoring: Used to enhance and modify the flavor profile of tobacco products.
• Chemical Synthesis: Acts as a versatile chiral auxiliary or starting material in stereoselective organic synthesis for research and fine chemical production.

Basic Information

Product Name	(-)-Menthyl Propionate
CAS No.	4951-48-8
Molecular Formula	C₁₃H₂₄O₂
Molecular Weight	212.33 g/mol
Synonyms	(-)-Menthyl propanoate; L-Menthyl propionate; (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl propionate; p-Menth-3-yl propionate; Menthol propionate; Propionic acid, menthyl ester; FEMA 2950; Laevo-menthyl propionate
EINECS	225-579-8

Quality Control

Our (-)-Menthyl Propionate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity assessment by GC or HPLC, to ensure it meets exacting specifications for the flavor, fragrance, and pharmaceutical sectors. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Odor	Characteristic minty, herbaceous
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Chiral Purity (GC)	≥ 99.0% (1R,2S,5R- isomer)
Refractive Index (20°C)	1.443 - 1.453
Specific Gravity (20/20°C)	0.910 - 0.920

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.