CAS 1672-34-0 appears in our catalog under these names: 3,6-Bis(methylthio)-1,2,4,5-tetrazine, >95.0%(HPLC), Bis(methylsulfanyl)-1,2,4,5-tetrazine 90%, 3,6-BIS(METHYLTHIO)-1,2,4,5-TETRAZINE, 3,6-Bis(methylthio)-1,2,4,5-tetrazine, 90%, 90%, 3,6-Bis(methylthio)-1,2,4,5-tetrazine, 98%. Offered by: TCI, Ambeed, Sigma-Aldrich, Chemat, Fluorochem. Available pack sizes: 200mg, 100mg, 250mg, 1g, 5g.