CAS 89992-70-1 appears in our catalog under these names: 2–Cyanoethyl N,N–diisopropylchlorophosphoramidite, 2-Cyanoethyl N,N-diisopropylchlorophosphoramidite, 97%, Monochloridite, 5g, Single, 2-CYANOETHYL N,N-DIISOPROPYLCHLOROPHOSP&, 2-CYANOETHYL N,N-DIISOPROPYLCHLOROPHOSPH. Offered by: GLPBio, Thermo Scientific (Acros), Sigma-Aldrich. Available pack sizes: 10g, 1g, 5g, 250MG.