CAS 442873-72-5 appears in our catalog under these names: 1,8-Bis(tetramethylguanidino)naphthalene, 95%, 1，8–Bis(tetramethylguanidino)naphthalene, 1,8-BIS(TETRAMETHYLGUANIDINO)NAPHTHALEN&, 1，8-Bis(tetramethylguanidino)naphthalene, 98%(HPLC),RG, 98%(HPLC),RG. Offered by: Combi-blocks, GLPBio, Sigma-Aldrich, Chemat. Available pack sizes: 5g, 1g, 100mg, 250mg.