CAS 452072-22-9 appears in our catalog under these names: PPA 98%, 4-(Pyridin-2-yldisulfanyl)pentanoic acid, 97%, 97%, PPA, 99.01%, PPA, 98%. Offered by: Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 25mg, 50mg, 100mg, 250mg, 1g, 5g, 100 mg, 50 mg.