Description

Methyl 3-Methylthiopropionate is a sulfur-containing ester with a distinctive, powerful odor profile. This compound is a key intermediate and flavor/fragrance ingredient valued for its fruity, tropical, and savory nuances. It is primarily sought after by manufacturers in the flavor & fragrance, food, and pharmaceutical industries. Its utility extends to organic synthesis, where it serves as a versatile building block for more complex molecules.

Application

• Flavor & Fragrance Industry: A crucial component for creating and enhancing tropical fruit flavors (e.g., passionfruit, grapefruit) and savory meaty notes in food products and beverages.
• Food Additives: Used as a synthetic flavoring agent to impart specific fruity or savory characteristics to processed foods, confectionery, and dairy products.
• Pharmaceutical Intermediates: Serves as a chemical precursor in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Organic Synthesis: Acts as a versatile building block in research and industrial chemistry for constructing sulfur-containing heterocycles and other specialty compounds.
• Agrochemicals: Employed in the development and production of certain pesticides and herbicides as an intermediate.
• Cosmetics & Personal Care: Incorporated into formulations for soaps, perfumes, and lotions to provide specific aromatic notes.

Basic Information

Product Name	Methyl 3-Methylthiopropionate
CAS No.	13532-18-8
Molecular Formula	C5H10O2S
Molecular Weight	134.20 g/mol
Synonyms	Methyl 3-(Methylthio)propionate; Methyl β-Methylmercaptopropionate; 3-(Methylthio)propionic Acid Methyl Ester; Methyl 3-Methylmercaptopropionate; Methyl 3-Methylsulfanylpropanoate; NSC 404058; Methyl 3-(Methylsulfanyl)propanoate; Propanoic acid, 3-(methylthio)-, methyl ester
EINECS	236-874-8

Quality Control

Our Methyl 3-Methylthiopropionate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including GC and/or HPLC analysis, to ensure it meets precise specifications for identity, purity, and odor profile. Certificates of Analysis (COA) detailing all test results are available upon request. We can supply grades suitable for industrial, food, and research applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong oxidizing agents. Recommended storage temperature is 2-25°C. The product is flammable and should be kept away from open flames and sparks.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (20°C)	1.465 - 1.475
Specific Gravity (20/20°C)	1.070 - 1.090
Odor	Characteristic, fruity/sulfurous

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