2. Cell Cycle/DNA Damage Anti-infection
  3. Antifolate Bacterial Antibiotic Influenza Virus
  4. Trimethoprim sulfate

Trimethoprim sulfate is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim sulfate is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim sulfate has the potential for the research of urinary tract infections, Shigellosis and Pneumocystis pneumonia. Trimethoprim sulfate can inhibit infection of Influenza A virus in chick embryo when combinated with zinc.

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

CAS No. : 56585-33-2

Size Stock
50 mg   Get quote  
100 mg   Get quote  
250 mg   Get quote  

* Please select Quantity before adding items.

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

Other In-stock Forms of Trimethoprim sulfate:

Other Forms of Trimethoprim sulfate:

Trimethoprim sulfate Related Antibodies

Top Publications Citing Use of Products

    Trimethoprim sulfate purchased from MedChemExpress. Usage Cited in: bioRxiv. 2025 January 15.

    Inhibitory effect of Trimethoprim on Babesia.

    View All Antibiotic Isoform Specific Products:

    View All Isoforms
    Aminoglycoside Glycopeptide Lipopeptide Macrolide Oxazolidinone Quinolone Tetracycline β-lactam

    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Trimethoprim sulfate is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim sulfate is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim sulfate has the potential for the research of urinary tract infections, Shigellosis and Pneumocystis pneumonia. Trimethoprim sulfate can inhibit infection of Influenza A virus in chick embryo when combinated with zinc[1][2][3][4].

    IC50 & Target

    Dihydrofolate reductase, Bacteria[1]
    Influenza A virus[4]
    In Vitro

    Trimethoprim interrupts folate metabolism by inhibition of the activity of dihydrofolase reductase (DHFR), which reduces dihydrofolate to tetrahydrofolate (THF)[1].
    Trimethoprim (3 μg/mL; 1 h) induces protein aggregation and main heat shock proteins (Hsps) in E. coli cells, which indicates that Trimethoprim sulfate presence leads to protein misfolding[1].
    Trimethoprim (1.5-3 μg/mL; 1 h) causes induction of DnaK, DnaJ, GroEL, ClpB, and IbpA/B Hsps in E. coli cells exposed to folate and heat stress[1].

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

    Trimethoprim sulfate Related Antibodies
    In Vivo

    Trimethoprim (10 mg/kg; i.v.; once every 12 h; 3 d) shows antibacterial activity against H. influenzae, S. pneumoniae, E. coli and N. meningitidis in infected mice[2].
    Trimethoprim can be connected with the thiomaltose (TM-TMP) and shows stability with a half-life of about 1 hour in complete serum, and has an MIC value around 1 μM against E. coli[2].
    Trimethoprim (10 mg/mL; 0.5 mL; inject with Trimethoprim-Zn combined suspension) decreases the virus titer and increases the survival rate of chicken embryo[4].

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

    Animal Model: Female C3H/HeOuJ mice (transurethrally infected with a 50 μL suspension containing 1-2×107 CFU of E. coli under 3% isoflurane)[2]
    Dosage: 10 mg/kg
    Administration: i.v.; once every 12 h; for 3 d
    Result: Showed antibacterial activity against H. influenzae, S. pneumoniae, E. coli and N. meningitidis with CD50s of 150 mg/kg, 335 mg/kg, 27.5 mg/kg and 8.4 mg/kg, respectively in infected mice.
    Animal Model: Fertilized eggs (injected H3N2 virus into amniotic and allantoic space at day 8)[4]
    Dosage: 10 mg/mL; 0.5 mL
    Administration: The Trimethoprim-Zn combined suspension was injected into the air sac; single dosage
    Result: Decreased the virus titer and increased the survival rate of chicken embryo.
    The survival rate peaked at ratio about 0.18 (Zn/Trimethoprim).
    Molecular Weight

    388.40

    Formula

    C14H20N4O7S
    CAS No.
    SMILES

    NC1=NC(N)=NC=C1CC2=CC(OC)=C(OC)C(OC)=C2.O=S(O)(O)=O
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    Please store the product under the recommended conditions in the Certificate of Analysis.
    Purity & Documentation
    References
    • No file chosen (Maximum size is: 1024 Kb)
    • If you have published this work, please enter the PubMed ID.
    • Your name will appear on the site.

    Trimethoprim sulfate Related Classifications

    • Molarity Calculator

    • Dilution Calculator

    The molarity calculator equation

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

    Mass   Concentration   Volume   Molecular Weight *
    = × ×

    The dilution calculator equation

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

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
    × = ×
    C1   V1   C2   V2
    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:

    Trimethoprim56585-33-2AntifolateBacterialAntibioticInfluenza VirusAntimicrobialfolatemetabolismdihydrofolatereductasetetrahydrofolateHspsproteinaggregationInhibitorinhibitorinhibit

    Your Recently Viewed Products:

    Inquiry Online

    Your information is safe with us. * Required Fields.

    Product Name

    		  

    Requested Quantity *

    Applicant Name *

    		 

    Salutation

    Email Address *

    		 

    Phone Number *

    Department

    		 

    Organization Name *

    City

    State

    Country or Region *

    		      

    Remarks

    Bulk Inquiry

    Inquiry Information

    Product Name:
    Trimethoprim sulfate
    Cat. No.:
    HY-B0510A
    Quantity:
    MCE Japan Authorized Agent:

    Customer Review

    Thank You for Your Feedback!

    Request for HNMR Report

    Please fill out this form to request the QC report. We will send it to your Email address shortly.

    Your information is safe with us. * Required Fields.

    Product Name

    		  

    Lot #

    Applicant Name *

    		 

    Email Address *

    Phone Number

    		 

    Department *

    Organization Name *

    		 

    Country or Region *

    Remarks

    SAFETY DATA SHEET (SDS)

    Request for HNMR Report

    We have received your request and will respond to you as soon as possible.