Medchemexpress, HY-17561 5g G-418 (disulfate) Geneticin sulfate;Antibiotic G-418 sulfate CAS:108321-42-2 Formula:C20H44N4O18S2 Purity:98% G-418 (disulfate) is an aminoglycoside antibiotic similar in structure to gentamicin B1, which blocks polypeptide synthesis by inhibiting the elongation step in both prokaryotic and eukaryotic cells. Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.