CAS 58458-85-8 appears in our catalog under these names: Trimethoxy(phenylethynyl)silane 95%, Trimethoxy(phenylethynyl)silane, 95%, 95%, Trimethoxy(phenylethynyl)silane, 95%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 5g.