1. Metabolic Enzyme/Protease Others
  2. Aldehyde Dehydrogenase (ALDH) Drug Derivative
  3. Coprine

Coprine is an orally active disulfiram (HY-B0240)-like component and an inhibitor of aldehyde dehydrogenase. Coprine is isolated from Coprinus atranentarius. Coprine inhibits low Km aldehyde dehydrogenase in rat liver and increases blood acetaldehyde levels during in vivo ethanol metabolism. Coprine does not inhibit semi-purified low Km aldehyde dehydrogenase from rat liver in vitro. Coprine can be used in studies related to alcoholism.

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Coprine

Coprine Chemical Structure

CAS No. : 58919-61-2

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Description

Coprine is an orally active disulfiram (HY-B0240)-like component and an inhibitor of aldehyde dehydrogenase. Coprine is isolated from Coprinus atranentarius. Coprine inhibits low Km aldehyde dehydrogenase in rat liver and increases blood acetaldehyde levels during in vivo ethanol metabolism. Coprine does not inhibit semi-purified low Km aldehyde dehydrogenase from rat liver in vitro. Coprine can be used in studies related to alcoholism[1][2][3].

In Vitro

Coprine (0.1-1.0 mM; 1-10 min) does not inhibit semi-purified rat liver low Km aldehyde dehydrogenase in vitro[3].

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

In Vivo

Coprine (3-243 mg/kg; i.p.) dose-dependently increases the acetaldehyde/ethanol ratio in alveolar gas of ethanol-treated rats, with the maximal effect occurring 4-6 hours after administration of 150 mg/kg Coprine[2].
Coprine (9-81 mg/kg; i,g.; single administration) dose-dependently inhibits low Km aldehyde dehydrogenase in rat liver in vivo[3].

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

Animal Model: Sprague-Dawley (female, 200-250 g)[3]
Dosage: 9 mg/kg; 27 mg/kg; 81 mg/kg
Administration: p.o.; single dose
Result: Increased blood acetaldehyde levels during ethanol metabolism by 10-, 20-, and 40-fold respectively compared to controls.
Elevated acetaldehyde levels persisted for 72 hours, and at the 81 mg/kg dose, remained increased for 144 hours.
Decreased ethanol elimination rate by 10%, 20%, and 30% respectively in rats pretreated with 9, 27, and 81 mg/kg coprine for 2 or 24 hours.
Markedly inhibited low-Kₘ acetaldehyde dehydrogenase activity in liver, with maximum inhibition observed 6 hours post-coprine administration; inhibition was long-lasting, with activity not returning to normal for 144 hours at the 27 and 81 mg/kg doses, and no inhibition detected at 240 hours.
Molecular Weight

202.21

Formula

C8H14N2O4

CAS No.
Appearance

Solid

Color

White to light yellow

SMILES

OC([C@@H](N)CCC(NC1(CC1)O)=O)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : ≥ 100 mg/mL (494.54 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.9454 mL 24.7268 mL 49.4535 mL
5 mM 0.9891 mL 4.9454 mL 9.8907 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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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  • Dilution Calculator

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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 (12.36 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 (12.36 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.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
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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

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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 4.9454 mL 24.7268 mL 49.4535 mL 123.6338 mL
5 mM 0.9891 mL 4.9454 mL 9.8907 mL 24.7268 mL
10 mM 0.4945 mL 2.4727 mL 4.9454 mL 12.3634 mL
15 mM 0.3297 mL 1.6485 mL 3.2969 mL 8.2423 mL
20 mM 0.2473 mL 1.2363 mL 2.4727 mL 6.1817 mL
25 mM 0.1978 mL 0.9891 mL 1.9781 mL 4.9454 mL
30 mM 0.1648 mL 0.8242 mL 1.6485 mL 4.1211 mL
40 mM 0.1236 mL 0.6182 mL 1.2363 mL 3.0908 mL
50 mM 0.0989 mL 0.4945 mL 0.9891 mL 2.4727 mL
60 mM 0.0824 mL 0.4121 mL 0.8242 mL 2.0606 mL
80 mM 0.0618 mL 0.3091 mL 0.6182 mL 1.5454 mL
100 mM 0.0495 mL 0.2473 mL 0.4945 mL 1.2363 mL
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  • 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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Coprine
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HY-122373
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