CAS 40581-17-7 appears in our catalog under these names: Violanthin/ 97.81% (existing batch purity), Violanthin, Violanthin 95%, 5,7-Dihydroxy-2-(4-hydroxyphenyl)-6-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-8-((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)-4H-chromen-4-one, 95%, 95%, Violanthin, 97.45%. Offered by: TargetMol, GLPBio, Ambeed, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 10 mg, 1 mg, 5 mg.