Description

Ethyl 3-Methylthiopropionate is a sulfur-containing ester valued for its distinctive, fruity aroma profile reminiscent of pineapple and tropical fruits. This organosulfur compound is a key building block and flavor/fragrance ingredient in high-value specialty chemical synthesis. It is essential for manufacturers in the flavor & fragrance, food & beverage, and fine chemical industries seeking to create authentic tropical notes or develop novel sulfur-based intermediates.

Application

• Flavor & Fragrance (F&F) Industry: A primary ingredient for creating and enhancing pineapple, tropical fruit, and exotic flavor compositions in food, beverages, and confectionery.
• Aroma Chemicals: Serves as a crucial intermediate in the synthesis of more complex sulfur-containing aroma molecules for perfumery and personal care products.
• Food Additives: Used as a flavoring agent to impart natural-tasting fruit flavors in processed foods, dairy products, and soft drinks.
• Fine Chemical Synthesis: Acts as a versatile synthon in organic chemistry for the preparation of pharmaceuticals, agrochemicals, and other specialty chemicals requiring a thioester functional group.
• Research & Development: Utilized in academic and industrial R&D labs for studying flavor chemistry and developing new synthetic methodologies.

Basic Information

Product Name	Ethyl 3-Methylthiopropionate
CAS No.	13327-56-5
Molecular Formula	C6H12O2S
Molecular Weight	148.22 g/mol
Synonyms	Ethyl 3-(Methylthio)propionate; 3-(Methylthio)propionic Acid Ethyl Ester; Ethyl β-(Methylthio)propionate; Ethyl 3-Methylmercaptopropionate; Ethyl 3-Methylsulfanylpropanoate; FEMA 3343; Ethyl 3-(Methylmercapto)propionate; Pineapple Mercaptan Propionate (related)
EINECS	236-368-1

Quality Control

We supply Ethyl 3-Methylthiopropionate in grades suitable for flavor, fragrance, and technical applications. Our products undergo rigorous quality testing to ensure consistent odor profile, purity, and chemical identity. Certificates of Analysis (COA) detailing specifications for assay, identity, and specific gravity are available upon request. Production can adhere to relevant industry guidelines including FEMA and FCC where applicable.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Odor	Characteristic pineapple, tropical fruit
Identification (IR)	Conforms to reference
Assay (GC)	≥ 98.0%
Specific Gravity (20°C)	1.020 - 1.040
Refractive Index (20°C)	1.460 - 1.480

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