CAS 663598-85-4 appears in our catalog under these names: SNPB, SNPB, 98.01%, 98.01%, SNPB, 98.01%, 2,5-dioxopyrrolidin-1-yl 4-((5-nitropyridin-2-yl)disulfanyl)butanoate, 98%. Offered by: TargetMol, GLPBio, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 2mg, 100mg, 25mg, 50mg, 50 mg, 100 mg, 10 mg, 5 mg.