CAS 20637-08-5 appears in our catalog under these names: Methyl 4-(4-methoxyphenyl)butanoate, 95%, Methyl 4–(4–methoxyphenyl)butanoate, Methyl 4-(4-methoxyphenyl)butanoate, 95%, 95%. Offered by: Combi-blocks, GLPBio, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 5g, 100mg, 10g.