1. Anti-infection
  2. Bacterial Antibiotic
  3. Cilastatin

Cilastatin (MK0791) is a reversible, competitive renal dehydropeptidase I inhibitor with an IC50 of 0.1 μM. Cilastatin inhibits the bacterial metallob-lactamase enzyme CphA with an IC50 of 178 μM. Cilastatin is an antibacterial adjunct.

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Cilastatin Chemical Structure

Cilastatin Chemical Structure

CAS No. : 82009-34-5

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10 mM * 1 mL in DMSO
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Customer Review

Based on 3 publication(s) in Google Scholar

Other Forms of Cilastatin:

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

Cilastatin (MK0791) is a reversible, competitive renal dehydropeptidase I inhibitor with an IC50 of 0.1 μM. Cilastatin inhibits the bacterial metallob-lactamase enzyme CphA with an IC50 of 178 μM. Cilastatin is an antibacterial adjunct[1][2][3].

IC50 & Target

β-lactam

 

In Vitro

Cilastatin (200 μg/mL; 24 hours; RPTECs) treatment protects against Vancomycin-induced proximal tubule apoptosis and increases cell viability, without compromising the antimicrobial effect of Vancomycin[2].

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

Apoptosis Analysis[2]

Cell Line: Renal proximal tubular epithelial cells (RPTECs)
Concentration: 200 μg/mL
Incubation Time: 24 hours
Result: Significantly ameliorated Vancomycin-induced nuclear apoptosis.
In Vivo

In a mouse model (female mice, strain CD-1, 20 g) of systemic infection, Imipenem plus Cilastatin can protect mice from S. aureus, E. coli, and P. aeruginosa infection[3].

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

Clinical Trial
Molecular Weight

358.45

Formula

C16H26N2O5S

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(O)/C(NC([C@@H]1C(C)(C)C1)=O)=C/CCCCSC[C@H](N)C(O)=O

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 (278.98 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

1M NaOH : 100 mg/mL (278.98 mM; ultrasonic and adjust pH to 12 with NaOH)

H2O : 5 mg/mL (13.95 mM; ultrasonic and warming and heat to 60°C)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.7898 mL 13.9489 mL 27.8979 mL
5 mM 0.5580 mL 2.7898 mL 5.5796 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.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • 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: ≥ 2.75 mg/mL (7.67 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.75 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (27.5 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 (6.97 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 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.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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:  50% PEG300    50% Saline

    Solubility: 20 mg/mL (55.80 mM); Clear solution; Need ultrasonic

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

Purity: 99.91%

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
H2O / DMSO / 1M NaOH 1 mM 2.7898 mL 13.9489 mL 27.8979 mL 69.7447 mL
5 mM 0.5580 mL 2.7898 mL 5.5796 mL 13.9489 mL
10 mM 0.2790 mL 1.3949 mL 2.7898 mL 6.9745 mL
DMSO / 1M NaOH 15 mM 0.1860 mL 0.9299 mL 1.8599 mL 4.6496 mL
20 mM 0.1395 mL 0.6974 mL 1.3949 mL 3.4872 mL
25 mM 0.1116 mL 0.5580 mL 1.1159 mL 2.7898 mL
30 mM 0.0930 mL 0.4650 mL 0.9299 mL 2.3248 mL
40 mM 0.0697 mL 0.3487 mL 0.6974 mL 1.7436 mL
50 mM 0.0558 mL 0.2790 mL 0.5580 mL 1.3949 mL
60 mM 0.0465 mL 0.2325 mL 0.4650 mL 1.1624 mL
80 mM 0.0349 mL 0.1744 mL 0.3487 mL 0.8718 mL
100 mM 0.0279 mL 0.1395 mL 0.2790 mL 0.6974 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Cilastatin 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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