• Tylosin tartrate packaged and labeled.

click on thumbnail to zoom
SKU: T014

  Click 'Bulk Order' for 10 or more
Price: make selection(s)

Tylosin tartrate is a macrolide antibiotic that was originally isolated from Streptomyces fradiae by the Lilly Research Laboratories in 1961 from a soil sample collected in Thailand. Tylosin is a mixture of four macrolide antibiotics, the main component of the mixture (> 80%) is tylosin Atylosin B (desmycosin), tylosin C (macrocin), and tylosin D (relomycin) may also be present.  Tylosin has broad spectrum bacteriostatic activity against gram-positive bacteria and mycoplasma, but much less activity against most gram-negative bacteria and fungi.

Tylosin, like other Macrolide antibiotics, is a bacteriostatic compound that reversibly bind to the 23S rRNA in the 50S (L27 protein) ribosome subunit and inhibit mRNA-directed protein synthesis.

Tylosin has been used to study protein synthesis, abscess prevention in cattle, and Mycoplasma infections.

For more tylosin products click here.

    CAS Number


    Molecular Formula

    C46H77NO17 · C4H606

    Molecular Weight

    1066.18 g/mol

    Mechanism of Action

    Macrolide antibiotics inhibit bacterial growth by targeting the 50S ribosomal subunit preventing peptide bond formation and translocation during protein synthesis. Resistance to tylosin tartate is commonly attributed to mutations in 50S rRNA preventing tylosin tartate binding allowing the cell to synthesize proteins free of error.

    Storage Conditions


    Tariff Code



    Tylosin tartate targets primarily gram positive bacteria and species of the Mycoplasma genus.


    Microbiology Applications

    Tylosin tartate is commonly used in clinical in vitro microbiological antimicrobial susceptibility tests (panels, discs, and MIC strips) against gram positive and Mycoplasma microbial isolates. Medical microbiologists use AST results to recommend antibiotic treatment options for infected patients. Representative MIC values include:

    • Mycoplasma hyopneumoniae 0.015 µg/mL – 0.3 µg/mL
    • Streptococcus pneumoniae 0.125 µg/mL - 64 µg/mL
    • For a complete list of tylosin tartate MIC values, click here.





    Almost white or slightly yellow powder


    5.0 - 7.2


    Not less than 800 IU/mg (on dried basis)

    Loss on Drying


    Sulfated Ash



    Tyramine: ≤3.5%



    Lovmar, Martin, and Tanel Tenson. "The Mechanism of Action of Macrolides, Lincosamides and Streptogramin B Reveals the Nascent Peptide Exit Path in the Ribosome."Journal of Molecular Microbiology 330.5 (2003): 1005-014.

Other Items In This Category