2. Anti-infection
  3. Bacterial Antibiotic
  4. Gamithromycin

Gamithromycin  (Synonyms: ML-1709460)

Cat. No.: HY-108365 Purity: 99.92%
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Gamithromycin is an antimicrobial agent which can inhibit the growth of MmmSC strains B237 and Tan8 with MICs of 0.00012 and 0.00006 μg/mL, respectively.

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

Gamithromycin Chemical Structure

Gamithromycin Chemical Structure

CAS No. : 145435-72-9

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10 mM * 1 mL in DMSO
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Based on 1 publication(s) in Google Scholar

Gamithromycin Related Antibodies

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  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

Gamithromycin is an antimicrobial agent which can inhibit the growth of MmmSC strains B237 and Tan8 with MICs of 0.00012 and 0.00006 μg/mL, respectively.

IC50 & Target

MIC: 0.00012 μg/mL (MmmSC strain B237), 0.00006μg/mL (MmmSC strain Tan8)[1]
In Vitro

The MIC values in serum are significantly lower than those in artificial medium; at an initial inoculum size of 106 cfu/mL, these are 64-, 8- and 64-fold lower for gamithromycin, tylosin and tilmicosin, respectively, against MmmSC strain B237 in serum compare to artificial medium. A similar pattern emerges for Tan8. Heat-inactivation of serum results in an MIC for gamithromycin that is higher than in either non-treated serum or artificial medium[1].

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

Gamithromycin Related Antibodies
In Vivo

The proportion of foals that recover without the need for a change in treatment is significantly (P<0.048) higher for foals treated with Gamithromycin (GAM) (38 of 40; 95%) or AZM-RIF (39 of 40; 98%) compare to control foals (32 of 41; 78%). The clinical scores, number of abscesses and the abscess scores after 1 and 2 weeks of treatment are significantly lower for foals treated with Gamithromycin (GAM) or AZM-RIF compare to control foals. The WBC count of foals treated with Gamithromycin (GAM) is significantly higher than that of foals treated with AZM-RIF on week 3 of treatment[2].

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

777.04

Formula

C40H76N2O12
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O[C@H]([C@H](C[C@@H](C)O1)N(C)C)[C@]1([H])O[C@@H]2[C@H]([C@@H]([C@H](C(O[C@@H]([C@@](C)(O)[C@H](O)[C@@H](C)CN(CCC)[C@H](C)C[C@]2(O)C)CC)=O)C)O[C@@]3([H])C[C@](C)([C@@H](O)[C@H](C)O3)OC)C
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (128.69 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.2869 mL 6.4347 mL 12.8694 mL
5 mM 0.2574 mL 1.2869 mL 2.5739 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (3.22 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: 2.5 mg/mL (3.22 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References
Cell Assay
[1]

Minimum inhibitory concentrations (MICs) for gamithromycin, tylosin and tilmicosin against MmmSC strains B237 and Tan8 are determined using a macrodilution technique. Equal volumes of MmmSC culture in logarithmic phase are added to each antimicrobial dilution to give an inoculum size of 107 cfu/mL, i.e. the intending initial titre for subsequent time-kill assays, in a volume of 4 mL. Cultures are incubated for 24 h at 37°C. At 0 and 24 h time points, samples are removed and serially diluted 10-fold down to 10-5. Aliquots (10 μL) of each dilution are transferred to solid medium; after incubation at 37°C in a humidified atmosphere of 5% carbon dioxide in air for at least 4 days, colonies are counted from the dilution that yields between 30 and 300 colonies per plate. Counts are converted into cfu/mL and MIC is defined as the lowest concentration of antimicrobial that prevents an increase in cfu/mL over 24 h[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[2]

Foals with ultrasonographic evidence of pulmonary abscesses are randomly assigned in 3 treatment groups: (1)gamithromycin at a dose of 6.0 mg/kg body weight is administered in the semimembranosus/semitendinosus muscles once a week (GAM; n=40); (2) azithromycin at a dose of 10 mg/kg PO once daily in combination with rifampin at a dose of 10 mg/kg PO once daily (AZM-RIF; n=40); and (3) no antimicrobial treatment (controls; n=41). All the foals in each treatment group also receive acetylcysteine at a dose of 10 mg/kg PO a day to provide the same daily manipulation of the foals in each group[2].

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

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.2869 mL 6.4347 mL 12.8694 mL 32.1734 mL
5 mM 0.2574 mL 1.2869 mL 2.5739 mL 6.4347 mL
10 mM 0.1287 mL 0.6435 mL 1.2869 mL 3.2173 mL
15 mM 0.0858 mL 0.4290 mL 0.8580 mL 2.1449 mL
20 mM 0.0643 mL 0.3217 mL 0.6435 mL 1.6087 mL
25 mM 0.0515 mL 0.2574 mL 0.5148 mL 1.2869 mL
30 mM 0.0429 mL 0.2145 mL 0.4290 mL 1.0724 mL
40 mM 0.0322 mL 0.1609 mL 0.3217 mL 0.8043 mL
50 mM 0.0257 mL 0.1287 mL 0.2574 mL 0.6435 mL
60 mM 0.0214 mL 0.1072 mL 0.2145 mL 0.5362 mL
80 mM 0.0161 mL 0.0804 mL 0.1609 mL 0.4022 mL
100 mM 0.0129 mL 0.0643 mL 0.1287 mL 0.3217 mL
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Gamithromycin 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.

Keywords:

Gamithromycin145435-72-9ML-1709460ML1709460ML 1709460BacterialAntibioticInhibitorinhibitorinhibit

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