CAS 1238575-77-3 appears in our catalog under these names: Biotinyl-8-amino-3, 6-dioxaoctanoic acid 95%, Biotinyl-8-amino-3, 6-dioxaoctanoic acid, 99.74%, Biotinyl-8-amino-3,6-dioxaoctanoic acid, 95%, 2–(2–(2–(5–((3aS,4S,6aR)–2–Oxohexahydro–1H–thieno(3,4–d)imidazol–4–yl)pentanamido)ethoxy)ethoxy)acetic acid, Biotin-O2Oc-OH. Offered by: Ambeed, MedChemExpress, Combi-blocks, GLPBio, Iris Biotech. Available pack sizes: 100mg, 250mg, 1g, 5g, 100 mg, 50 mg, 500mg.