Sodium methanethiolate

Sodium methanethiolate (CAS 5188-07-8), also known as sodium thiomethylate, is a reactive organosulfur nucleophile used in pharmaceutical synthesis, agrochemical manufacturing and polymer chemistry.

Where is Sodium methanethiolate used?

• Pharmaceuticals: intermediate in API synthesis where selective sulfur alkylation is required, including certain antibiotics and cardiovascular compounds
• Agrochemicals: introduces methylthio functionality into herbicide and pesticide molecules during multi-step synthesis
• Polymers and plastics: catalyst or chain-transfer agent controlling weight and modifying end-group chemistry
• Oil and gas: scavenger formulations and pH-regulating additive in refinery process streams
• It functions as a methylthiolation reagent, introducing the methylthio group into target molecules under controlled reaction conditions.

Commercial specifications

• Liquid solution, typically aqueous or methanolic, commonly 20% to 40% by weight for industrial use
• Packaging ranges from drums to IBC totes depending on volume requirements