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G 418 disulfate salt solution

50 mg/mL in H2O, 0.1 μm filtered, BioReagent, suitable for cell culture

Antibiotic G418
Empirical Formula (Hill Notation):
C20H40N4O10 · 2H2SO4
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

biological source

Micromonospora echinospora


0.1 μm filtered

product line





50-60 mg per mL

mol wt



pkg of 10 and 100 mL


50 mg/mL in H2O


cell culture | mammalian: suitable


endotoxin, tested




H2O: 50 mg/mL, clear

Mode of action

protein synthesis | interferes

antibiotic activity spectrum


storage temp.


SMILES string




InChI key


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General description

Chemical structure: aminoglycoside


G418 disulfate is an aminoglycoside antibiotic similar in structure to gentamicin used for selection and maintenance of prokaryotic and eukaryotic cells. Optimal concentrations for selection and maintenance vary by cell lines. Bacteria and algae require 5 μg/mL or less while animal cells may require 300-500 μg/mL.

Biochem/physiol Actions

Mode of Action: G418 blocks polypeptide synthesis and protein elongation by inhibiting synthesis at the 70S and 80S ribosomes.

Antimicrobial Spectrum: G418 selects for cells stably transfected with an iNOS promoter construct and neomycin resistance gene and shows activity against protozoa and helminthes.


The product is stable for two years when stored at 2-8°C.


Health hazard

Signal Word


Hazard Statements

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

12 - Non Combustible Liquids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Joan Lin-Cereghino et al.
Yeast (Chichester, England), 25(4), 293-299 (2008-03-11)
The methylotrophic yeast, Pichia pastoris, is widely used as a host organism for the expression of heterologous proteins. Currently, the Zeocin and blasticidin resistance genes are the only dominant selectable markers that can be used for primary selection of transformants....
Michael Agaphonov et al.
Yeast (Chichester, England), 27(4), 189-195 (2009-12-17)
We have developed a set of cloning vectors possessing a modified Tn903 kanamycin resistance gene that enables the selection of both kanamycin-resistant transformants in Escherichia coli and G418-resistant transformants in the yeasts Saccharomyces cerevisiae, Hansenula polymorpha and Pichia pastoris. Expression...
Kelvin Kai-Wan Hui et al.
Journal of cellular and molecular medicine, 23(3), 1784-1797 (2018-12-15)
Aberrant regulation of programmed cell death (PCD) has been tied to an array of human pathologies ranging from cancers to autoimmune disorders to diverse forms of neurodegeneration. Pharmacologic modulation of PCD signalling is therefore of central interest to a number...
Denisa Jamecna et al.
Developmental cell, 49(2), 220-234 (2019-03-25)
Lipid transfer proteins (LTPs) acting at membrane contact sites (MCS) between the ER and other organelles contain domains involved in heterotypic (e.g., ER to Golgi) membrane tethering as well as domains involved in lipid transfer. Here, we show that a...
Jieru Li et al.
Cell, 178(2), 491-506 (2019-06-04)
Transforming the vast knowledge from genetics, biochemistry, and structural biology into detailed molecular descriptions of biological processes inside cells remains a major challenge-one in sore need of better imaging technologies. For example, transcription involves the complex interplay between RNA polymerase...


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