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Enalapril Maleate RAAS inhibitor

Cat.No.S1941

Enalapril (MK-421) Maleate is an angiotensin-converting enzyme (ACE) inhibitor, used in the treatment of hypertension, diabetic nephropathy, and chronic heart failure.
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Quality Control

Batch: Purity: 99.98%
99.98

Solubility

In vitro
Batch:

DMSO : 98 mg/mL (198.97 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 17 mg/mL

Water : Insoluble

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In vivo
Batch:

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
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Chemical Information, Storage & Stability

Molecular Weight 492.52 Formula

C20H28N2O5.C4H4O4

Storage (From the date of receipt)
CAS No. 76095-16-4 Download SDF Storage of Stock Solutions

Synonyms MK-421 Maleate SMILES CCOC(=O)C(CCC1=CC=CC=C1)NC(C)C(=O)N2CCCC2C(=O)O.C(=CC(=O)O)C(=O)O

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC50/Ki
ACE
In vitro
Enalapril Maleate is rapidly converted by ester hydrolysis to enalaprilat, a potent ACE inhibitor; this compound itself is only a weak ACE inhibitor. It lowers peripheral vascular resistance without causing an increase in heart rate.
In vivo
Enalapril Maleate treatment abolishes the deleterious effects of eNOS deficiency on blood pressure (BP), atherosclerosis, and kidney dysfunction in nnee mice. This compound causes a dose-dependent increase in fore limb strength in the mdx mouse. It causes a dose-dependent reduction of superoxide anion production in tibialis anterior muscle of the mdx mouse as observed by dihydroethidium staining. This chemical (5 mg/kg) reduces the area of muscle necrosis in both gastrocnemious muscle and diaphragm, without significant effect on non-muscle area. It results in significant increases in kidney weight and in concentrations of urinary albumin, N-acetyl-fl-d-glucosamidase (NAG) and serum ET-1 in streptozotocin (STZ)-induced diabetic (STZ-DM) rats as compared with the non-diabetic rats, and the concentration of ET-1 in the kidneys tended to be increased. This compound results in increased mesangial cell proliferation, matrix expansion and enlarged mesangial area in the kidney of the diabetic rats. It reduces increased concentrations of urinary albumin and NAG in the STZ-DM rats to the control values with a slight improvement in the electron microscopic changes.
References
  • [4] https://pubmed.ncbi.nlm.nih.gov/12379508/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-08-03)

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Hypertension in Pregnancy
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