CAS 28448-04-6 appears in our catalog under these names: 3-Nitrocoumarin/ 97.28% (existing batch purity), 3–Nitrocoumarin, 3-Nitrocoumarin 95%, 3-Nitro-2H-Chromen-2-One, 95%, 95%, 3-Nitrocoumarin, 98.52%. Offered by: TargetMol, GLPBio, Ambeed, Chemat, MedChemExpress. Available pack sizes: 2mg, 5mg, 10mg, 25mg, 50mg, 100mg, 10mM (in 1ml dmso), 250mg.