CAS Registry Number

CAS 330641-16-2 — O-((1H)-6-Chlorobenzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TCTU)

O-((1H)-6-Chlorobenzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TCTU) is a highly efficient coupling reagent used in peptide synthesis to improve reaction yields and purity. It accelerates amide bond formation under mild conditions, making it ideal for lab-scale and industrial applications. This chemical has a CAS number of 330641-16-2, a molecular formula of C11H15BClF4N5O, and a molecular weight of 355.53. It should be stored at ambient temperature and handled with caution, as it carries a warning signal word. Molekula supplies TCTU from research to bulk quantities with full documentation and ISO 9001:2015 traceability.