1. Cell Cycle/DNA Damage
    Anti-infection
  2. Antifolate
    Bacterial
    Antibiotic
  3. Trimethoprim

Trimethoprim 

Cat. No.: HY-B0510 Purity: 99.98%
Handling Instructions

Trimethoprim is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim has the potential for urinary tract infections, Shigellosis and Pneumocystis pneumonia treatment.

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

Trimethoprim Chemical Structure

Trimethoprim Chemical Structure

CAS No. : 738-70-5

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Free Sample (0.5-1 mg)   Apply now  
10 mM * 1  mL in DMSO USD 55 In-stock
Estimated Time of Arrival: December 31
500 mg USD 50 In-stock
Estimated Time of Arrival: December 31
5 g USD 60 In-stock
Estimated Time of Arrival: December 31
10 g USD 72 In-stock
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50 g   Get quote  

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Customer Review

Based on 3 publication(s) in Google Scholar

Other Forms of Trimethoprim:

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Description

Trimethoprim is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim has the potential for urinary tract infections, Shigellosis and Pneumocystis pneumonia treatment[1][2][3].

IC50 & Target

Dihydrofolate reductase[1]
Bacteria[1]

In Vitro

Trimethoprim interrupts folate metabolism by inhibition of the activity of dihydrofolase reductase (DHFR), which reduces dihydrofolate to tetrahydrofolate (THF)[1].
Trimethoprim causes protein aggregation and induction of main heat shock proteins (Hsps) in E. coli cells, which indicates that Trimethoprim presence leads to protein misfolding. Trimethoprim causes induction of DnaK, DnaJ, GroEL, ClpB, and IbpA/B Hsps. Among these Hsps, IbpA/B are most efficiently induced by Trimethoprim and coaggregates with the insoluble proteins. Upon folate stress, deletion of the delta ibpA/B operon resulted in increased protein aggregation but does not influence cell viability[1].

In Vivo

In intraperitoneal infections in mice, the CD50 values for Trimethoprim alone against H. influenzae, S. pneumoniae, E. coli and N. meningitidis, is 150 mg/kg, 335 mg/kg, 27.5 mg/kg and 8.4 mg/kg, respectively[2].

Clinical Trial
Molecular Weight

290.32

Formula

C₁₄H₁₈N₄O₃

CAS No.

738-70-5

SMILES

NC1=NC=C(CC2=CC(OC)=C(OC)C(OC)=C2)C(N)=N1

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 (172.22 mM; Need ultrasonic)

H2O : 0.67 mg/mL (2.31 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.4445 mL 17.2224 mL 34.4447 mL
5 mM 0.6889 mL 3.4445 mL 6.8889 mL
10 mM 0.3444 mL 1.7222 mL 3.4445 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

*All of the co-solvents are provided by MCE.
References
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Keywords:

TrimethoprimAntifolateBacterialAntibioticAntimicrobialfolatemetabolismdihydrofolatereductasetetrahydrofolateHspsproteinaggregationInhibitorinhibitorinhibit

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Trimethoprim
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