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




NONH for all modes of transport

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

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...
Jieru Li et al.
Nature structural & molecular biology, 27(11), 1032-1040 (2020-09-23)
Transcription activation by distal enhancers is essential for cell-fate specification and maintenance of cellular identities. How long-range gene regulation is physically achieved, especially within complex regulatory landscapes of non-binary enhancer-promoter configurations, remains elusive. Recent nanoscopy advances have quantitatively linked promoter...
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....
Frida C Mohlin et al.
Molecular immunology, 65(2), 367-376 (2015-03-04)
Atypical hemolytic uremic syndrome (aHUS) is a disease of complement dysregulation, characterized by hemolytic anemia, thrombocytopenia and acute renal failure. Mutations in complement inhibitors are major risk factors for development of aHUS. The three aHUS patients reported in this study...
Fumika Koyano et al.
EMBO reports, 20(12), e47728-e47728 (2019-10-12)
Ubiquitylation of outer mitochondrial membrane (OMM) proteins is closely related to the onset of familial Parkinson's disease. Typically, a reduction in the mitochondrial membrane potential results in Parkin-mediated ubiquitylation of OMM proteins, which are then targeted for proteasomal and mitophagic...
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