Trimethoprim lactate salt
Trimethoprim lactate salt (CAS: 23256-42-0) is an antibacterial agent with a molecular weight of 380.40 g/mol and the empirical formula C14H18N4O3 · C3H6O3. It functions as a dihydrofolate reductase inhibitor, specifically targeting the prokaryote enzyme. Primarily employed in veterinary medicine and laboratory research, it is utilized for its selective inhibitory action against bacterial folate synthesis pathways.
- IUPAC
- 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine lactate salt

Antibacterial Agent
Trimethoprim lactate salt serves as an effective antibacterial agent. Its mechanism of action involves inhibiting dihydrofolate reductase, crucial for bacterial DNA synthesis and replication.
Laboratory Reagent
In research settings, this compound can be used as a selective agent, particularly in molecular biology and microbiology for selecting for or against specific bacterial strains based on their susceptibility to trimethoprim.
Veterinary Medicine
Trimethoprim, often in combination with sulfonamides, is widely used in veterinary medicine to treat a range of bacterial infections in animals, including respiratory and urinary tract infections.
| Molecular weight | 380.40 |
|---|---|
| Empirical formula | C14H18N4O3 · C3H6O3 |
| Assay | ≥98% |
| Storage temperature | 2-8°C |
| Application | Trimethoprim is primarily used as an antibacterial agent. It has dihydrofolate reductase inhibitor activity with selectivity for the prokaryote enzyme. It is used clinically to treat urinary tract infections, mild acute prostatitis, recurrent cystitis, asymptomatic bacteriuria during pregnancy and respiratory tract infections1. Trimethoprim lactate salt is used as a selection agent2. |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Trimethoprim lactate salt used for?
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Trimethoprim lactate salt is used as an antibacterial agent and a selective agent in laboratory settings. It inhibits bacterial dihydrofolate reductase, interfering with DNA synthesis.
What are the CAS number and formula for Trimethoprim lactate salt?
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The CAS number is 23256-42-0 and the empirical formula is C14H18N4O3 · C3H6O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethoprim lactate salt with a purity of ≥98%. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
What are the safety and handling precautions for Trimethoprim lactate salt?
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Handling requires protective equipment including eyeshields, gloves, and a type N95 (US) or type P1 (EN143) respirator filter. The product has a WGK Germany rating of 3, indicating it is hazardous to water.
How is Trimethoprim lactate salt shipped and exported?
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Trimethoprim lactate salt is stored at 2-8°C. As a global supplier, TSS has extensive experience in exporting chemicals worldwide, ensuring compliance with all relevant shipping regulations.
How can I request a sample or quote for Trimethoprim lactate salt?
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To request a sample or obtain a quote, please contact the TSS sales team through the website or by phone, providing the product name and CAS number.
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