CAS 185351-19-3 appears in our catalog under these names: (S)-2-((1,4-Dioxo-1,4-dihydronaphthalen-2-yl)amino)-3-(1H-indol-3-yl)propanoic acid, 99%, 99%, NQTrp, NQTrp 99%, NQTrp, 98.37%, N-(1,4-Dihydro-1,4-dioxo-2-naphthalenyl)-L-tryptophan, 99%. Offered by: Chemat, TargetMol, GLPBio, Ambeed, MedChemExpress. Available pack sizes: 25mg, 50mg, 100mg, 2mg, 1mg, 10mg, 5mg, 250mg.