CAS Registry Number

CAS 98-59-9 — p-Toluenesulfonyl chloride

p-Toluenesulfonyl chloride is an aromatic sulfonyl chloride widely used as a sulfonylating agent in organic synthesis, pharmaceuticals, and agrochemical production. It functions as a key reagent for introducing tosyl groups in reactions like tosylation of alcohols and amines. This chemical has a CAS number of 98-59-9, a molecular formula of (CH3)C6H4SO2Cl, and a molecular weight of 190.65 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a "Danger" signal word. Molekula supplies p-Toluenesulfonyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: 4-Toluenesulfonyl chloride