Synonyms: 1-[Bis(dimethylamino)methylen]-5-chlorobenzotriazolium 3-oxide tetrafluoroborate N,N,N,N-Tetramethyl-O-(6-chloro-1H-benzotriazol-1-yl)uronium tetrafluoroborate TCTU Purity Limit: ≥ 98% (HPLC) CAS No.: 330641-16-2 Molecular Formula: C11H15BClF4N5O Molecular Weight: 355.53 …