CAS 548-03-8 appears in our catalog under these names: Protohypericin/ 98.52% (existing batch purity), Protohypericin, 1,3,4,6,8,15-Hexahydroxy-10,13-dimethyldibenzo[a,o]perylene-7,16-dione, Protohypericin, 95.11%, Protohypericin (Standard). Offered by: TargetMol, GLPBio, Chemat, MedChemExpress. Available pack sizes: 1mg, 5mg, 10mg, 25mg, 50mg, 100mg, 500mg, 5 mg.