G-418 Solution

Empirical Formula (Hill Notation):	C20H40N4O10 · 2H2SO4
CAS Number:	108321-42-2
Molecular Weight:	692.71
MDL number:	MFCD00058314
PubChem Substance ID:	329799925

Кат. номер

4727894001

4727878001

O-2-Amino-2,7-dideoxy-δ-glycero-α-δ-glucoheptopyranosyl[1->4]-O-3-deoxy-4C-methyl-3-[methyl-amino]-β-L-arabinopyranosyl-δ-streptamine, disulfate salt G-418, an aminoglycoside antibiotic, is used as a dominant selection agent in transfection experiments. The antibiotic interferes with the function of 80S ribosomes and blocks protein synthesis in eukaryotic cells. Transfection of neomycin-resistance genes into cells results in resistance to G-418 and enables the cells to grow in culture media containing G-418.
G-418 Solution is used to select eukaryotic cells that are stably transfected with the neomycin resistance gene (neo), and to maintain the phenotype (neor) of resistant cells.
G-418 is also used to eliminate contaminating fibroblasts from mixed cultures.
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.
Features and Benefits

• Convenient sterile-filtered solution for immediate use – saves valuable time and effort, and avoids potential errors arising from the preparation of sterile working stock solution from G-418 powder.
• Consistent quality and potency – shows no lot-to-lot variation in its ability to select resistant cells.
• Function tested in a cell culture assay - ensures effectiveness.
• Very pure, as indicated by TLC and microbiological assays – allows you to use less antibiotic while producing greater selection pressure. Lack of contaminants means minimal toxicity.
• Cost effective, since the selected colonies are stable.

Contents
Aqueous solution of G-418, 892 µg/mg, filtered through 0.2µm pore size membrane
Quality
Purity: = 98%, as shown by TLC.
Function testing: in cell culture.
Preparation Note
Working concentration: The optimal concentration of G-418 must be determined experimentally and varies with the cell type used.
Active weight: >700µg/mg
Recommended concentration in cell culture: The optimal concentration of G-418 must be determined experimentally; it varies from 100µg/ml to 1mg/ml, depending on the cell type used.
Specific rotation: 104° to 121°, in water (on dry basis, according to USP XXII).
For life science research only. Not for use in diagnostic procedures.

assay	98% (TLC)
Quality Level	100,
form	solution
mol wt	692.7 Da
packaging	pkg of 100 ml (04727894001 [5 x 20 ml, equivalent to 5 g]), pkg of 20 mL (04727878001 [equivalent to 1 g])
Торговая марка	Roche
concentration	50 mg/mL
application(s)	transfection: suitable
Mode of action	protein synthesis | inhibits
antibiotic activity spectrum	protozoa
shipped in	wet ice
storage temp.	2-8°C
SMILES string	OS(O)(=O)=O.OS(O)(=O)=O.CN[C@H]1[C@H](O)[C@@H](OC[C@@]1(C)O)O[C@H]2[C@H](N)C[C@H](N)[C@@H](O[C@H]3O[C@H]([C@H](C)O)[C@@H](O)[C@H](O)[C@H]3N)[C@@H]2O
InChI	1S/C20H40N4O10.2H2O4S/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;2*1-5(2,3)4/h6-19,24-30H,4-5,21-23H2,1-3H3;2*(H2,1,2,3,4)/t6?,7-,8+,9+,10+,11-,12-,13-,14+,15+,16-,17-,18+,19-,20+;;/m0../s1
InChI key	UHEPSJJJMTWUCP-NKCAIAFTSA-N

RIDADR

NONH for all modes of transport