Description

Methylsulfenyl Bromide is a highly reactive organosulfur brominating agent with the CAS number 18681-52-2. This compound is valued for its role as a key synthetic intermediate in the preparation of complex sulfur-containing molecules. It is primarily utilized by research chemists and process development scientists in the pharmaceutical and agrochemical industries for constructing novel molecular scaffolds.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing thioether or sulfoxide functional groups.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides where specific sulfur motifs are required for bioactivity.
• Organic Synthesis Reagent: Acts as an electrophilic sulfur source for introducing the methylsulfenyl (CH3S-) moiety into target molecules under controlled conditions.
• Material Science Research: Employed in the development of novel polymers or organic electronic materials that incorporate sulfur-bridged structures.
• Cross-Coupling Reactions: May be utilized in palladium-catalyzed or other metal-mediated coupling reactions to form carbon-sulfur bonds.

Basic Information

Product Name	Methylsulfenyl Bromide
CAS No.	18681-52-2
Molecular Formula	CH3BrS
Molecular Weight	126.99 g/mol
Synonyms	Methanesulfenyl bromide; Bromo(methyl)sulfane; Methyl thiohypobromite; Methylsulfur bromide; Thiobromomethane; Methyl sulfenyl bromide; CH3SBr
EINECS	Contact for details

Quality Control

Our Methylsulfenyl Bromide is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay and impurity profile. We adhere to cGMP principles where applicable to support our clients in regulated industries.

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). Due to its nature as a strong acid/organic solvent and highly volatile compound, it must be kept away from heat, sparks, and open flame. Containers should be kept tightly sealed when not in use to prevent moisture ingress and decomposition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC or Titration)	≥ 95.0%
Purity (GC)	Contact for details
Water Content (KF)	≤ 0.5%

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