Description

S-Methyl 2-Methylpropanethioate is a specialized thioester compound with the CAS registry number 42075-42-3. This chemical serves as a valuable intermediate and building block in advanced organic synthesis, prized for its unique sulfur-containing functional group. It is primarily utilized by research and development chemists, as well as process development teams, in the pharmaceutical, agrochemical, and fragrance industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring thioester or sulfide linkages.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the thioester moiety contributes to biological activity.
• Flavor & Fragrance Ingredient: Acts as a precursor for sulfur-containing flavor compounds and aroma chemicals, contributing to savory or tropical notes.
• Organic Synthesis Reagent: Employed in academic and industrial R&D for various transformations, including nucleophilic acyl substitution reactions.
• Polymer Chemistry: Can be used as a monomer or chain-transfer agent in the synthesis of specialty polymers and materials.
• Chemical Research: Serves as a standard or reference material in analytical and metabolic studies.

Basic Information

Product Name	S-Methyl 2-Methylpropanethioate
CAS No.	42075-42-3
Molecular Formula	C5H10OS
Molecular Weight	118.20 g/mol
Synonyms	S-Methyl 2-methylpropanethioate; S-Methyl isobutanethioate; Isobutyric acid, thio-, S-methyl ester; 2-Methylpropanethioic acid S-methyl ester; Methyl isobutanethioate; S-Methyl isobutyrothioate; Thiobutyric acid, S-methyl ester; Isobutanethioic acid, S-methyl ester
EINECS	Contact for details

Quality Control

Our S-Methyl 2-Methylpropanethioate is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including GC, HPLC, and NMR, to ensure identity, purity, and consistency. We provide full traceability and detailed Certificates of Analysis (COA) for all shipments, supporting your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are kept tightly sealed to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.450 - 1.460
Density (20°C)	0.95 - 0.98 g/mL

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