1. Anti-infection
    Cell Cycle/DNA Damage
  2. Parasite
    Antifolate
  3. Proguanil hydrochloride

Proguanil hydrochloride 

Cat. No.: HY-B0806A
Handling Instructions

Proguanil hydrochloride, an antimalarial prodrug, is metabolized to the active metabolite Cycloguanil (HY-12784). Proguanil hydrochloride is a dihydrofolate reductase (DHFR) inhibitor.

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

Proguanil hydrochloride Chemical Structure

Proguanil hydrochloride Chemical Structure

CAS No. : 637-32-1

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Description

Proguanil hydrochloride, an antimalarial prodrug, is metabolized to the active metabolite Cycloguanil (HY-12784). Proguanil hydrochloride is a dihydrofolate reductase (DHFR) inhibitor[1][2].

In Vitro

Proguanil per se has only weak antimalarial activity in vitro (IC50=2.4-19 μM), and its effectiveness depends on the active metabolite Cycloguanil (IC50=0.5-2.5 nM). The Cycloguanil is a dihydrofolate reductase (DHFR) inhibitor. The combination of Atovaquone and Proguanil is synergistic in vitro. Both drugs also have activity against gametocytes and pre-erythrocytic (hepatic) stages of malaria parasites[1].
Proguanil acts as a biguanide rather than as its metabolite Cycloguanil (a parasite dihydrofolate reductase [DHFR] inhibitor) to enhance the Atovaquone effect. Proguanil-mediated enhancement is specific for Atovaquone, since the effects of other mitochondrial electron transport inhibitors, such as Myxothiazole and Antimycin, are not altered by inclusion of Proguanil[2].
5-HT3 receptor responses are reversibly inhibited by Proguanil, the metabolite 4-chlorophenyl-1-biguanide (CPB) and the active metabolite Cycloguanil (CG), with an IC50 of 1.81, 1.48 and 4.36 μM, respectively[3].

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

In Vivo

Proguanil (p.o.; 2.9 mg/kg body weight; daily for 5 days and 6 weeks respectively) shows mild degenerative changes for five days, while shows severe degenerative changes for six weeks in wistar strain albino rats[4].
Serum testosterone level is significantly decreased for proguanil treatment rats[4].
Administration of Malarone (Atovaquone and Proguanil) to experimentally B. gibsoni infected two dogs in chronic stage and three dogs in acute stage results in decrease in parasitemia, and clinical improvements are observed[5].

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

Clinical Trial
Molecular Weight

290.19

Formula

C₁₁H₁₇Cl₂N₅

CAS No.

637-32-1

SMILES

N=C(NC1=CC=C(Cl)C=C1)NC(NC(C)C)=N.[H]Cl

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

References
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Keywords:

ProguanilParasiteAntifolateantimalarialinfectionembryotoxicitytoxicitybiguanidereproductiveInhibitorinhibitorinhibit

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Proguanil hydrochloride
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HY-B0806A
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