CAS 42373-56-8 appears in our catalog under these names: 4–Azidocoumarin, 4-Azidocoumarin, 4-Azidocoumarin, 95%, 95%, 4-Azidocoumarin, 50 mg, 4-Azidocoumarin, 100 mg. Offered by: GLPBio, Biosynth, Chemat, Roth, Fluorochem. Available pack sizes: 200mg, 250mg, 50mg, 100mg, 500mg, 1000mg.