CAS 4670-09-1 appears in our catalog under these names: 3,5-Dihydroxyphenylacetic acid, min. 95 %, 1 g, 3,5-Dihydroxyphenylacetic acid, 98%, 2-(3,5-Dihydroxyphenyl)acetic acid 95%, 2-(3,5-Dihydroxyphenyl)acetic acid, 95%, 95%, 2-(3,5-DIHYDROXYPHENYL)ACETIC ACID, 98%. Offered by: Roth, Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 5g, 250mg, 100mg, 500mg, 2g.