Art. -Nr.: HY-B0510C

Trimethoprim lactate

Name: Trimethoprim lactate
Brand: MedChemExpress
SKU: HY-B0510C
Price: 50.00 USD
Availability: InStock
Rating: 5 (13 reviews)

13 Cited Publications

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Based on 13 publication(s) in Google Scholar

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

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Reinheit : 99.90%
CAS. Nr.: 23256-42-0
Formel: C₁₇H₂₄N₄O₆
Molecular Weight:380.40

Speicherung:

4°C, sealed storage, away from moisture

* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Trimethoprim lactate Chemical Structure

CAS. Nr.: 23256-42-0

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Top Publications Citing

Use of MCE Products

Antibody-Drug Conjugates

One-stop solution for XDC (ADC/PDC/RDC/ApDC/FDC/ISAC/VDC/SMDC)

Biologische Aktivität
- Beschreibung
- IC₅₀ & Target
- In Vitro
- In Vivo
Chemical Information
Publications (13)
Lösungsmittel & Löslichkeit
- In Vitro
- In Vivo
Protokoll (3)
Reinheit & Dokumentation
Verweise
Help & FAQs
Classifications
Bioz

Biologische Aktivität

Beschreibung

IC₅₀ & Target

Dihydrofolate reductase, Bacteria^[1]
Influenza A virus^[4]

Alle Antibiotic Isoform-spezifische Produkte anzeigen :

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. Further protocols information, click here.

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).

Chemical Information

CAS. Nr. 23256-42-0
Appearance Solid
Molecular Weight 380.40
Formel C₁₇H₂₄N₄O₆
Color White to off-white
SMILES

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

Room temperature in continental US; may vary elsewhere.
Speicherung

4°C, sealed storage, away from moisture

* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Publications (13)

All Bio/Physico-chemical Assay

Sort by:

Journal Impact Factor

Autophagy

HSPA8 regulates anti-bacterial autophagy through liquid-liquid phase separation. [Abstract]

2023 Oct;19(10):2702-2718. PMID: 37312409
Water Res

Quantifying community-wide antibiotic usage via urban water fingerprinting: Focus on contrasting resource settings in South Africa. [Abstract]

2023 Jul 15:240:120110. PMID: 37247434
J Exp Med

Antibiotic use in early life impairs MAIT cell-mediated immunity in adulthood. [Abstract]

2026 Mar 2;223(3):e20241287. PMID: 41400657
Food Chem X

Machine learning prioritization of antibiotic residues in aquatic foods reveals exposure-driven genotoxic risk mediated by BCL2. [Abstract]

2026 Feb 8:34:103646. PMID: 41756597
Virulence

Antibacterial efficacy and mechanism of the novel antimicrobial peptide lachnospirin-1 against Acinetobacter baumannii. [Abstract]

2026 Dec 31;17(1):2646808. PMID: 41838520
J Mol Med (Berl)

Combination of PARP inhibitor and temozolomide to suppress chordoma progression. [Abstract]

2019 Aug;97(8):1183-1193. PMID: 31201471
Microorganisms

Isolation, Antimicrobial Susceptibility, and Genotypes of Three Pasteurellaeae Species Prevalent on Pig Farms in China Between 2021 and 2023. [Abstract]

2025 Apr 18;13(4):938. PMID: 40284774
Infect Drug Resist

2026 May 8;19.
bioRxiv

2026 Apr 29.
Res Sq

2026 Mar 9.
bioRxiv

2025 January 15.

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

Inhibitory effect of Trimethoprim on Babesia.
bioRxiv

2024 May 10.
Chemosphere

Mass-balance-model-based evaluation of sewage treatment plant contribution to residual pharmaceuticals in environmental waters. [Abstract]

2019 Jun:225:378-387. PMID: 30884299

Lösungsmittel & Löslichkeit

In Vitro:

DMSO : 250 mg/mL (657.20 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H₂O : 16.67 mg/mL (43.82 mM; Need ultrasonic)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.6288 mL

13.1441 mL

26.2881 mL

5 mM

0.5258 mL

2.6288 mL

5.2576 mL

10 mM

0.2629 mL

1.3144 mL

2.6288 mL

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 (sealed storage, away from moisture). 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.

Molaritätsrechner

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

Mass Mass

Konzentration Konzentration

Volumen Volumen

Molecular Weight Molecular Weight

Verdünnungsrechner

Konzentration _{(Stammlösung)} × Volumen _{(Stammlösung)} = Konzentration _{(Ziellösung)} × Volumen _{(Ziellösung)}

Konzentration _{(Stammlösung)} Konzentration _{(Stammlösung)}

Volumen _{(Stammlösung)} Volumen _{(Stammlösung)}

Konzentration _{(Ziellösung)} Konzentration _{(Ziellösung)}

Volumen _{(Ziellösung)} Volumen _{(Ziellösung)}

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

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: ≥ 2.08 mg/mL (5.47 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.

Protocol 2

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

Solubility: ≥ 2.08 mg/mL (5.47 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.08 mg/mL (5.47 mM); Clear solution

This protocol yields a clear solution of ≥ 2.08 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 (20.8 mg/mL) to 900 μL Corn oil, and mix evenly.

Working Solution

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: 2 mg/mL (5.26 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

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

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

Working solution concentration: 0.22 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) .

Protokoll

All Signal Pathway Related Cell Biology Histomorphology

Research Protocol for Infectious Diseases
Infectious-disease experiments test how pathogens interact with host barriers, innate immune receptors, inflammatory signaling, pathogen replication, and tissue injury; pattern-recognition receptors such as TLRs, RIG-I-like receptors, NOD-like receptors, and inflammasomes detect microbial molecules and activate NF-κB, interferon, and cytokine responses. The central hypothesis is that infection severity reflects the balance between pathogen burden and host response: protective inflammation restricts pathogen growth, whereas excessive or mislocalized inflammation contributes to tissue damage and disease phenotype. Unresolved questions include which host pathways are protective versus pathogenic, why some infection models fail to translate to human disease, and which combined readouts best predict clinically relevant infection outcomes.
Aerobic Bacterial Batch Culture on Broth/Agar
Aerobic bacterial batch culture grows a closed inoculated population in broth or on agar without continuous medium replacement; growth readouts include turbidity/OD for total suspended biomass and colony-forming units for viable cells able to form colonies on agar. OD-based growth curves reflect light scattering by cells, but OD is instrument-, pathlength-, species-, cell-size-, and density-dependent, so OD should be calibrated or interpreted alongside viable counts when quantitative cell density is required.
Gram Staining of Tissue Sections
Gram staining of tissue sections is a histochemical technique used to differentiate Gram-positive and Gram-negative bacteria within histological specimens based on differences in bacterial cell wall structure and dye retention, adapted from classical bacteriological Gram staining into tissue-compatible “histological Gram stain” variants. In tissue applications, modifications of the Brown-Hopps and Brown-Brenn methods are commonly used to improve differentiation of microorganisms embedded within host connective tissue and to reduce overstaining or loss of Gram-negative signal, which are known limitations of earlier approaches. The principle relies on crystal violet-iodine complex retention in Gram-positive organisms and subsequent decolorization and counterstaining steps that allow contrast visualization of Gram-negative organisms against tissue background.

Reinheit & Dokumentation

Select Batch:

Reinheit: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (283 KB)
SDS (394 KB)
- English - EN (394 KB)
- Français - FR (394 KB)
- Deutsch - DE (394 KB)
- Norwegian - NO (394 KB)
- Español - ES (394 KB)
- Swedish - SV (394 KB)
- Italian - IT (394 KB)
- Korean - KR (394 KB)
- Portuguese - PT (394 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

Verweise

[1]. Ewa Laskowska, et al. Trimethoprim Induces Heat Shock Proteins and Protein Aggregation in E. Coli Cells. Curr Microbiol. 2003 Oct;47(4):286-9. [Content Brief]

[2]. R N Brogden, et al. Trimethoprim: A Review of Its Antibacterial Activity, Pharmacokinetics and Therapeutic Use in Urinary Tract Infections. Drugs. 1982 Jun;23(6):405-30. [Content Brief]

[3]. Xiaojian Wang, et al. A Trimethoprim Conjugate of Thiomaltose Has Enhanced Antibacterial Efficacy In Vivo. Bioconjug Chem. 2018 May 16;29(5):1729-1735. [Content Brief]

[4]. El Habbal MH. Combination therapy of zinc and trimethoprim inhibits infection of influenza A virus in chick embryo. Virol J. 2021 Jun 3;18(1):113. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
H₂O / DMSO	1 mM	2.6288 mL	13.1441 mL	26.2881 mL	65.7203 mL
	5 mM	0.5258 mL	2.6288 mL	5.2576 mL	13.1441 mL
	10 mM	0.2629 mL	1.3144 mL	2.6288 mL	6.5720 mL
	15 mM	0.1753 mL	0.8763 mL	1.7525 mL	4.3814 mL
	20 mM	0.1314 mL	0.6572 mL	1.3144 mL	3.2860 mL
	25 mM	0.1052 mL	0.5258 mL	1.0515 mL	2.6288 mL
	30 mM	0.0876 mL	0.4381 mL	0.8763 mL	2.1907 mL
	40 mM	0.0657 mL	0.3286 mL	0.6572 mL	1.6430 mL
DMSO	50 mM	0.0526 mL	0.2629 mL	0.5258 mL	1.3144 mL
	60 mM	0.0438 mL	0.2191 mL	0.4381 mL	1.0953 mL
	80 mM	0.0329 mL	0.1643 mL	0.3286 mL	0.8215 mL
	100 mM	0.0263 mL	0.1314 mL	0.2629 mL	0.6572 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.

Bioz

Keywords

Trimethoprim lactate

13 Cited Publications

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Trimethoprim lactate

Publications Citing Use of MedChemExpress (MCE) Trimethoprim lactate

Alle Antibiotic Isoform-spezifische Produkte anzeigen