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BioReagent, suitable for cell culture

E-Mycin, Erythrocin
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

product line





≥850 μg per mg


cell culture | mammalian: suitable


≤0.1 EU/mg endotoxin




133 °C


2 M HCl: 50 mg/mL (Stock solutions should be stored at 2-8 °C. Stable at 37 °C for 3 days.)
ethanol: soluble (Stock solutions should be stored at 2-8 °C. Stable at 37 °C for 3 days.)

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria

Mode of action

protein synthesis | interferes

SMILES string




InChI key


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General description

Chemical structure: macrolide
Erythromycin is an antibiotic produced by growth of certain strains of Streptomyces erythreus. This product is composed largely of erythromycin A with small amounts of erythromycins B and C and is recommended for concentration at 100 mg/L. Concentrations between 50 and 200 mg/L have also proven effective in controlling bacterial growth. Erythromycin has been used as a motilin receptor agonist, to block respiratory glycoconjugate secretion in human airways in vitro, and for selecting plasmid-cured and recombinant lactococcus lactis MG1363 strains.


Erythromycin has been used:
  • as a supplement for nutrient broth medium for culturing green fluorescent protein (GFP)- expressing E. coli
  • as a model drug to determine small intestinal (SMI) microtissue viability using the MTT assay{254
  • as an antibiotic to study the treatment strategies of chronic infections


1, 5 g in poly bottle

Biochem/physiol Actions

Mode of Action: Erythromycin acts by inhibiting elongation at the transpeptidation step, specifically aminoacyl translocation from the A-site to P-site by binding to the 50s subunit of the bacterial 70s rRNA complex.

Antimicrobial Spectrum: This product acts against both gram-negative and gram-positive bacteria.


This product is stable in solution at 37°C for 3 days. Stock solutions should be stored at 2-8°C.

Preparation Note

This product is soluble in water at 2 mg/mL, with a 0.067% solution in water yielding a pH of 8.0-10.5. It is also soluble in ethanol at 50 mg/mL, yielding a clear, colorless to faint yellow solution. It is freely soluble in alcohol, acetone, chloroform, acetonitrile and ethyl acetate but forms salts with acids. All solutions should be protected from light.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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Drug-driven phenotypic convergence supports rational treatment strategies of chronic infections
Imamovic L, et al.
Cell, 172(1-2), 121-134 (2018)
Acoustofluidic bacteria separation
Li S, et al.
Journal of Micromechanics and Microengineering, 27(1), 015031-015031 (2016)
Maopeng Wang et al.
International journal of biological macromolecules, 160, 736-740 (2020-06-03)
Coronavirus disease 2019 (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has become a global pandemic in the past four months and causes respiratory disease in humans of almost all ages. Although several drugs have been
Geert Huys et al.
Antimicrobial agents and chemotherapy, 54(6), 2567-2574 (2010-04-14)
In a small-scale harmonization study involving nine laboratories in eight European countries, the intra- and interlaboratory performances of two commercially available systems, i.e., the VetMIC microplate system and Etest, for antimicrobial susceptibility testing of nonenterococcal lactic acid bacteria (NELAB) and
Bernard Charroux et al.
STAR protocols, 1(3), 100117-100117 (2020-12-31)
This protocol is designed to prepare adult axenic Drosophila before monitoring their behavior in a two-choice feeding assay, where flies are confronted with an axenic versus a dead or alive bacteria-contaminated feeding solution. Several aspects of the procedure, including raising


Inhibition of Protein Synthesis by Antibiotics

Protein synthesis is a complex, multi-step process involving many enzymes as well as conformational alignment. However, the majority of antibiotics that block bacterial protein synthesis interfere with the processes at the 30S subunit or 50S subunit of the 70S bacterial ribosome.

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