CAS Registry Number

CAS 105832-38-0 — O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate (TSTU)

O-(N-Succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate (TSTU) is a highly efficient coupling reagent used in peptide synthesis and organic chemistry for the activation of carboxylic acids. It facilitates amide bond formation with minimal racemization, making it ideal for high-yielding reactions. This chemical has a CAS number of 105832-38-0, a molecular formula of C10H15BF4N2O3, and a molecular weight of 290.09 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies TSTU from research to bulk quantities with full documentation and ISO 9001:2015 traceability.