1. Anti-infection
  2. Bacterial Antibiotic
  3. G-418 disulfate

G-418 disulfate  (Synonyms: Geneticin sulfate; Antibiotic G-418 sulfate)

Cat. No.: HY-17561 Purity: 98.26%
COA Handling Instructions

G-418 disulfate (Geneticin sulfate), is an aminoglycoside antibiotic, inhibits protein synthesis in eukaryotes and prokaryotes. G-418 disulfate is commonly used as a selective agent for eukaryotic cells.

For research use only. We do not sell to patients.

G-418 disulfate Chemical Structure

G-418 disulfate Chemical Structure

CAS No. : 108321-42-2

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in Water
ready for reconstitution
USD 55 In-stock
10 mM * 1 mL in Water USD 55 In-stock
500 mg USD 50 In-stock
1 g USD 60 In-stock
5 g USD 192 In-stock
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Customer Review

Based on 29 publication(s) in Google Scholar

Other Forms of G-418 disulfate:

Top Publications Citing Use of Products

29 Publications Citing Use of MCE G-418 disulfate

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review


G-418 disulfate (Geneticin sulfate), is an aminoglycoside antibiotic, inhibits protein synthesis in eukaryotes and prokaryotes. G-418 disulfate is commonly used as a selective agent for eukaryotic cells[1].

IC50 & Target



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[2].
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[2]. An aminoglycoside antibiotic, G418, has been shown to be an inhibitor of many pro- and eukaryotes at concentrations from 1-300 microgram/ml[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight







White to off-white



Structure Classification
Initial Source

Micromonospora rhodorangea


Room temperature in continental US; may vary elsewhere.


4°C, stored under nitrogen, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen, away from moisture)

Solvent & Solubility
In Vitro: 

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

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.4436 mL 7.2180 mL 14.4361 mL
5 mM 0.2887 mL 1.4436 mL 2.8872 mL
10 mM 0.1444 mL 0.7218 mL 1.4436 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  PBS

    Solubility: 50 mg/mL (72.18 mM); Clear solution; Need ultrasonic

*All of the co-solvents are available by MedChemExpress (MCE).
Purity & Documentation

Purity: 98.26%

Animal Administration

To characterize the sensitivity of the trypanosome populations to G418 in vivo, bloodstream forms of T. brucei brucei GUTat 3.1 and T. brucei brucei GUTat 3.1/BBR3 are expanded separately in sublethally irradiated mice. Prior to the first peak of parasitemia, trypanosomes are collected, and aliquots containing 106 trypanosomes are inoculated intraperitoneally into mice. Twenty-four hours following infection, the mice are divided into groups and treated with G418 at a dose of 10, 20, 30, 40, 50, or 80 mg/kg of body weight (bw) by inoculating intraperitoneally 0.2 mL of the drug in sterile water. At 24 and 48 h following the first treatment, G418 is administered to animals in each group at the same dose as before, resulting in three treatments per mouse. Repeated drug treatments are necessary to ensure complete elimination of nontransfected GUTat 3.1 parasites from the mice. Mice are then monitored daily, for 33 days, for the presence of parasites by microscopic examination of wet-blood films. Animals found to be parasitemic are recorded and then removed from the experiment.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

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G-418 disulfate Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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× = ×
C1   V1   C2   V2

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