Captopril (Synonyms: SQ 14225)

Name: Captopril
Brand: MedChemExpress
SKU: HY-B0368
Rating: 5.0 (22 reviews)

Cat. No.: HY-B0368 Purity: 99.84%: Data Sheet
COA

SDS
Handling Instructions
FAQs
Technical Support

Captopril (SQ 14225), antihypertensive agent, is a thiol-containing competitive, orally active angiotensin-converting enzyme (ACE) inhibitor (IC₅₀=0.025 μM) and has been widely used for research of hypertension and congestive heart failure. Captopril is also a New Delhi metallo-β-lactamase-1 (NDM-1) inhibitor with an IC₅₀ of 7.9 μM.

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

CAS No. : 62571-86-2

Size	Stock	Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO ready for reconstitution	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in DMSO	In-stock	Estimated Time of Arrival: December 31
Solid
25 mg	In-stock	Estimated Time of Arrival: December 31
50 mg	In-stock	Estimated Time of Arrival: December 31
100 mg	In-stock	Estimated Time of Arrival: December 31
500 mg	In-stock	Estimated Time of Arrival: December 31
1 g	Get quote
5 g	Get quote

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This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 22 publication(s) in Google Scholar

Other Forms of Captopril:

22 Publications Citing Use of MCE Captopril

In Vivo Efficacy Study

Histological Imaging/Staining

: Captopril purchased from MedChemExpress. Usage Cited in: Allergy. 2025 Nov 14. [Abstract]; Representative images of feet collected 30 min post-Evans Blue (EB) injection. Mice were assigned to five groups: WT control, Serping1^+/− control, WT + Captopril (2.5 mg/kg; i.v.), Serping1^+/− + Captopril + PBS, and Serping1^+/− + Captopril + AAV-NG-ABE8e. Captopril elicited significant Evans blue leakage.

: Captopril purchased from MedChemExpress. Usage Cited in: Allergy. 2025 Nov 14. [Abstract]; Representative intravital confocal images showing real-time FITC-dextran extravasation from intestinal microvasculature. Mice were assigned to: WT control, Serping1^+/− control, WT + Captopril (2.5 mg/kg; i.v.), Serping1^+/− + Captopril + PBS, and Serping1^+/− + Captopril + AAV-NG-ABE8e. By 30 min, Captopril-treated mice demonstrated pronounced FITC-dextran extravasation—both in area and fluorescence intensity—relative to WT and Serping1^+/− controls.

: Captopril purchased from MedChemExpress. Usage Cited in: Nat Commun. 2023 May 2;14(1):2523. [Abstract]; Serum BK levels from sWAT from WT male mice treated with 40 mg/kg/day Captopril or 70 mg/kg/day Enalapril by gavage once a day for 21 days. The results showed that Captopril significantly increased serum BK levels.

: Captopril purchased from MedChemExpress. Usage Cited in: Nat Commun. 2023 May 2;14(1):2523. [Abstract]; Representative immunohistochemistry (IHC) staining of UCP1 and H&E staining of sWAT. Captopril (40 mg/kg; once daily; 21 days; 25°C) induced sWAT brownin.

: Captopril purchased from MedChemExpress. Usage Cited in: Nat Commun. 2023 May 2;14(1):2523. [Abstract]; Captopril (40 mg/kg; once daily; 21 days; 25°C) decreased the weight of sWAT in WT male mice.

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Biological Activity
Purity & Documentation
References
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Description

IC₅₀ & Target

ACE^[1].

Cellular Effect

Cell Line	Type	Value	Description	References
HeLa	EC₅₀	130 μM Compound: L-A1	Cytotoxicity against human HeLa cells incubated for 72 hrs by alamar blue cell viability assay Cytotoxicity against human HeLa cells incubated for 72 hrs by alamar blue cell viability assay	[PMID: 39013490]
KB 3-1	IC₅₀	15.67 mM Compound: captropril	Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay Cytotoxicity against human KB-3-1 cells incubated for 72 hrs by MTT assay	[PMID: 21657271]
KB-V1	IC₅₀	13.07 mM Compound: captropril	Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay Cytotoxicity against drug-resistant human KBV1 cells expressing P-gp incubated for 72 hrs by MTT assay	[PMID: 21657271]

In Vitro

Captopril (SQ 14225) has been shown to have similar morbidity and mortality benefits to those of diuretics and beta-blockers in hypertensive patients. Captopril has been shown to delay the progression of diabetic nephropathy, and enalapril and lisinopril prevent the development of nephropathy in normoalbuminuric patients with diabetes^[4].
An equimolar ratio of the cis and trans states of Captopril exists in solution and that the enzyme selects only the trans state of the inhibitor that presents architectural and stereoelectronic complementarity with its substrate binding groove^[5].

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

Clinical Trial

Molecular Weight

217.29

Formula

C₉H₁₅NO₃S

CAS No.

62571-86-2

Appearance

Solid

Color

White to yellow

SMILES

O=C(O)[C@H]1N(C([C@H](C)CS)=O)CCC1

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Solvent & Solubility

In Vitro:

DMSO : ≥ 50 mg/mL (230.11 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H₂O : ≥ 50 mg/mL (230.11 mM)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions

Concentration Solvent Mass	1 mg	5 mg	10 mg

1 mM	4.6021 mL	23.0107 mL	46.0214 mL
5 mM	0.9204 mL	4.6021 mL	9.2043 mL
10 mM	0.4602 mL	2.3011 mL	4.6021 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.

* 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)

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

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)

Volume _(start)

Concentration _(final)

Volume _(final)

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 (11.51 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 (11.51 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.
Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil
Solubility: ≥ 2.5 mg/mL (11.51 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

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: PBS
Solubility: 32.5 mg/mL (149.57 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Calculation results:

Working solution concentration: mg/mL

This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.

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).

Purity & Documentation

Purity: 99.84%

Select Batch:

Data Sheet (280 KB) SDS (419 KB)

COA (255 KB) HNMR (217 KB) LCMS (261 KB)

Handling Instructions (2659 KB)

References

[1]. Afrin S, et al. Eritadenine from Edible Mushrooms Inhibits Activity of Angiotensin Converting Enzyme in Vitro. J Agric Food Chem. 2016;64(11):2263-2268. [Content Brief]

[2]. Esmaeili S, et al. Captopril/enalapril inhibit promiscuous esterase activity of carbonic anhydrase at micromolar concentrations: An in vitro study. Chem Biol Interact. 2017;265:24-35. [Content Brief]

[3]. Li N, et al. Simplified captopril analogues as NDM-1 inhibitors. Bioorg Med Chem Lett. 2014;24(1):386-389. [Content Brief]

[4]. Tzakos, A.G., et al., The molecular basis for the selection of captopril cis and trans conformations by angiotensin I converting enzyme. Bioorg Med Chem Lett, 2006. 16(19): p. 5084-7. [Content Brief]

[5]. Song, J.C. and C.M. White, Clinical pharmacokinetics and selective pharmacodynamics of new angiotensin converting enzyme inhibitors: an update. Clin Pharmacokinet, 2002. 41(3): p. 207-24. [Content Brief]

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

DMSO / H₂O	1 mM	4.6021 mL	23.0107 mL	46.0214 mL	115.0536 mL
	5 mM	0.9204 mL	4.6021 mL	9.2043 mL	23.0107 mL
	10 mM	0.4602 mL	2.3011 mL	4.6021 mL	11.5054 mL
	15 mM	0.3068 mL	1.5340 mL	3.0681 mL	7.6702 mL
	20 mM	0.2301 mL	1.1505 mL	2.3011 mL	5.7527 mL
	25 mM	0.1841 mL	0.9204 mL	1.8409 mL	4.6021 mL
	30 mM	0.1534 mL	0.7670 mL	1.5340 mL	3.8351 mL
	40 mM	0.1151 mL	0.5753 mL	1.1505 mL	2.8763 mL
	50 mM	0.0920 mL	0.4602 mL	0.9204 mL	2.3011 mL
	60 mM	0.0767 mL	0.3835 mL	0.7670 mL	1.9176 mL
	80 mM	0.0575 mL	0.2876 mL	0.5753 mL	1.4382 mL
	100 mM	0.0460 mL	0.2301 mL	0.4602 mL	1.1505 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.

Captopril 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:

Captopril62571-86-2SQ 14225SQ14225SQ-14225Angiotensin-converting Enzyme (ACE)antihypertensiveoralhypertensioncongestiveheartfailureInhibitorinhibitorinhibit

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Captopril (Synonyms: SQ 14225)

Customer Review

Other Forms of Captopril:

Captopril Related Antibodies

22 Publications Citing Use of MCE Captopril

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•Related Screening Libraries:

•Related Small Molecules:

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Biological Activity

Purity & Documentation

References

Customer Review

Captopril Related Antibodies

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Complete Stock Solution Preparation Table

Captopril Related Classifications

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