CAS 644-78-0 appears in our catalog under these names: 2-Hydroxychalcone/ 99.38% (existing batch purity), 2–Hydroxychalcone, 2-Hydroxychalcone, 98+% , 2-Hydroxychalcone, 2-Hydroxychalcone 98%. Offered by: TargetMol, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, Ambeed. Available pack sizes: 100mg, 1g, 10mM (in 1ml dmso), 500mg, 5g, 25g, 50g, 100g.