CAS 1638544-48-5 appears in our catalog under these names: 5-(((2,5-Dioxopyrrolidin-1-yl)oxy)carbonyl)-2-(1,2,2,10,10,11-hexamethyl-4,8-bis(sulfomethyl)-1,2,10,11-tetrahydropyrano[3,2-g:5,6-g']diquinolin-13-ium-6-yl)benzoate, 97%, 97%, BP Fluor 594 NHS ester. Offered by: Chemat, MedChemExpress. Available pack sizes: 10mg, 25mg, Get quote.