CAS Registry Number

CAS 18162-48-6 — tert-Butyldimethylchlorosilane (TBSCl)

tert-Butyldimethylchlorosilane (TBSCl) is a chlorosilane reagent widely used in organic synthesis for the selective protection of alcohols and phenols as tert-butyldimethylsilyl (TBS) ethers. It enables controlled functional group masking in multi-step syntheses, pharmaceuticals, and material science applications. This clear, volatile liquid (CAS 18162-48-6) has the molecular formula (CH3)3CSi(CH3)2Cl and a molecular weight of 150.73 g/mol. Store at ambient conditions, but handle with caution—it carries a **Danger** signal word due to corrosive properties. Molekula supplies tert-Butyldimethylchlorosilane from research to bulk quantities with full documentation and ISO 9001:2015 traceability.