CAS 56-81-5 appears in our catalog under these names: Optizyme™ DNA Polymerase I , Glycerol, 5 l, 86 %, Ph. Eur., plastic, gliceryna bezw. czda, gliceryna bezw. cz, Glycerol. Offered by: Thermo Scientific (Fisher), Roth, Chempur, HPC Standards, Chemat Brand. Available pack sizes: 2500U, 5l, 2,5l, 1ml, on request, 1l, 100ml, 10ml.