CAS 250263-37-7 appears in our catalog under these names: 1-(2-Chloropyridin-4-yl)butane-1,3-dione, 95%, 4-(2-CHloropyridin-4-yl)-4-hydroxybut-3-en-2-one, 95%, 4–(2–Chloropyridin–4–yl)–4–hydroxybut–3–en–2–one. Offered by: Combi-blocks, AmBeed, GLPBio. Available pack sizes: 250mg, 1g, 100mg.