CAS 23994 appears in our catalog under these names: 4,4'-Dihydroxydiphenyl ether, 98%, 5-(2-Thienyl)cyclohexane-1,3-dione, 95%, 3-Phenylisoquinoline-1,4-dione, 97%, 5-Thien-2-ylcyclohexane-1,3-dione, 98%, 2–(Ethylthio)pyrimidine–4，6–diamine. Offered by: Fluorochem, Combi-blocks, Chemat Brand, AmBeed, GLPBio. Available pack sizes: 25g, 100g, 500g, 5g, 250mg, 1g, on request, 10g.