CAS 151978-50-6 appears in our catalog under these names: N–Boc–4–pentyne–1–amine, N-Boc-4-pentyne-1-amine/ 99.5% (existing batch purity), N-Boc-4-pentyne-1-amine, N-Boc-4-pentyne-1-amine 95%, N-Boc-4-pentyne-1-amine, 99.01%. Offered by: GLPBio, TargetMol, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 50mg, 500mg, 10mg, 100mg, 25mg, 50g, 5g, 10g.