CAS 20347-71-1 appears in our catalog under these names: Proanthocyanidins, min. 95 %, 1 g, Proanthocyanidins, Proanthocyanidins 95% (UV), 2-(3,4-Dihydroxyphenyl)-2-((2-(3,4-dihydroxyphenyl)-5,7-dihydroxychroman-3-yl)oxy)chroman-3,4,5,7-tetraol, 95% (UV), 95% (UV), Proanthocyanidins, min. 95 %, 500 mg. Offered by: Roth, TargetMol, GLPBio, Biosynth, Ambeed. Available pack sizes: 1g, 10mg, 25mg, 50mg, 100mg, 500mg, 5mg, 1000mg.