G-418 (disulfate)

Catalog No. Size PriceQuantity
M8778-2 2mg solid $75
M8778-10 10mg solid $225


Geneticin G418 is an aminoglycoside antibiotic, blocking polypeptide synthesis by inhibiting the elongation step in both prokaryotic and eukaryotic cells.

Product information

CAS Number: 108321-42-2

Molecular Weight: 594.63

Formula: C20H42N4O14S


Geneticin sulfate

Gentamicin sulfate

Antibiotic G-418 sulfate

Chemical Name: (2R,3S,4R,5R,6S)-5-amino-6-{[(1R,2S,3S,4R,6S)-4,6-diamino-3-{[(2R,3R,4R,5R)-3,5-dihydroxy-5-methyl-4-(methylamino)oxan-2-yl]oxy}-2-hydroxycyclohexyl]oxy}-2-[(1R)-1-hydroxyethyl]oxane-3,4-diol; sulfuric acid

Smiles: C[C@@H](O)[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O[C@H]3OC[C@](C)(O)[C@H](NC)[C@H]3O)[C@H](N)C[C@@H]2N)[C@H](N)[C@@H](O)[C@@H]1O.OS(O)(=O)=O


InChi: InChI=1S/C20H40N4O10.H2O4S/c1-6(25)14-11(27)10(26)9(23)18(32-14)33-15-7(21)4-8(22)16(12(15)28)34-19-13(29)17(24-3)20(2,30)5-31-19;1-5(2,3)4/h6-19,24-30H,4-5,21-23H2,1-3H3;(H2,1,2,3,4)/t6-,7+,8-,9-,10-,11+,12+,13-,14-,15-,16+,17-,18-,19-,20+;/m1./s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: H2O : 125 mg/mL (180.45 mM; Need ultrasonic)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

G418 sulfate, an aminoglycoside neomycin analogue, interferes with protein synthesis and has been used extensively for selection of mammalian cell lines that possess neomycin resistance (NR). The neomycin resistance (neo) gene is frequently used in eukaryotic vectors as a dominant selectable gene. G418 can be covalently bound to asialoorosomucoid (AsOR) to form a conjugate for hepatocyte-specific targeting and toxicity. The human GD3 synthase cDNA was transfected into MDA-MB231 cells, and G-418 bulk selection was used to select cells stably overexpressing the GD3 synthase. An aminoglycoside antibiotic, G418, has been shown to be an inhibitor of many pro- and eukaryotes at concentrations from 1-300 microgram/ml.


  1. Giordano-Santini R, et al. An antibiotic selection marker for nematode transgenesis. Nat Methods. 2010;7(9):721-723.
  2. Volarevic M, et al. A novel G418 conjugate results in targeted selection of genetically protected hepatocytes without bystander toxicity. Bioconjug Chem. 2007;18(6):1965-1971.
  3. Davies J, et al. A new selective agent for eukaryotic cloning vectors. Am J Trop Med Hyg. 1980;29(5 Suppl):1089-1092.

Products are for research use only. Not for human use.

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