• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Trimethoprim

Trimethoprim

Product ID T7034
Cas No. 738-70-5
Purity ≥98%
Product Unit SizeCostQuantityStock
5 g $82.00 In stock
25 g $255.00 In stock
100 g $715.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Trimethoprim is an antibiotic that inhibits dihydrofolate reductase, acting as an anti-folate. Trimethoprim exhibits antibacterial activity against both gram positive and gram negative bacteria and is clinically used to treat urinary tract infections.

Product Info

Cas No.

738-70-5

Purity

≥98%

Formula

C14H18N4O3

Formula Wt.

290.32

Chemical Name

5-[(3,4,5-Trimethoxyphenyl)methyl]-2,4- pyrimidinediamine

IUPAC Name

5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine

Synonym

Instalac, Monotrim, Proloprim, Trimopan, Trimpex, Wellcoprim

Melting Point

199-203°C

Solubility

Soluble in DMAC, or benzyl alcohol. Slightly soluble in propylene glycol, chloroform, methanol and water.

Appearance

White or yellowish white powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

T7034 MSDS PDF

Info Sheet

T7034 Info Sheet PDF

References

Singh P, Kaur M, Sachdeva S. Mechanism inspired development of rationally designed dihydrofolate reductase inhibitors as anticancer agents. J Med Chem. 2012 Jul 26;55(14):6381-90. PMID: 22734697.

Sangurdekar DP, Zhang Z, Khodursky AB. The association of DNA damage response and nucleotide level modulation with the antibacterial mechanism of the anti-folate drug trimethoprim. BMC Genomics. 2011 Nov 28;12:583. PMID: 22122981.

Brogden RN, Carmine AA, Heel RC, et al. Trimethoprim: a review of its antibacterial activity, pharmacokinetics and therapeutic use in urinary tract infections. Drugs. 1982 Jun;23(6):405-30. PMID: 7049657.

Ho YB, Zakaria MP, Latif PA, Saari N. Occurrence of veterinary antibiotics and progesterone in broiler manure and agricultural soil in Malaysia. Sci Total Environ. 2014 Aug 1;488-489:261-267. PMID: 24836135.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • A2500

    AG-1478

    EGFR inhibitor.

    ≥98%
  • P7020

    Prednisone

    Synthetic prednisolone prodrug; glucocorticoid ...

    ≥98%
  • A5228

    Angiogenin

    Small protein, cleaves RNA.

    ≥98%
  • A6971

    ARRY-162

    MEK1/2 and ERK inhibitor.

    ≥99%
  • E6995

    Erythromycin Ethylsuccinate

    Macrolide; protein translation inhibitor, mamma...

    ≥97%
  • T9970

    Tyrphostin AG1295

    PDGFR inhibitor.

    ≥98%
  • M1646

    Melanin Concentrating Hormone, human/mouse/rat

    Endogenous peptide hormon involved in energy ho...

    ≥98%
  • C104761

    CCT-196969

    pan-Raf inhibitor.

    ≥98%
  • H965142

    Hydrolyzed Fumonisin B1

    Mycotoxin produced by Fusarium fungi that infec...

    ≥99% by ELSD
  • C0264

    L-Carnitine Tartrate

    Endogenous quaternary ammonium, required for fa...

    ≥98%
  • T9945

    Tylosin Tartrate

    Macrolide; peptidyl transferase inhibitor, prot...

    ≥90%
  • B030966

    BAY 11-7082

    inhibits inflammatory signaling

    ≥98%
  • K5604

    Kobe 0065

    Ras inhibitor.

    ≥99%
  • B3472

    4,4′-(1,1′-Biphenyl-4,4′-diyldioxy)dianiline

    Potential VEGFR2, Met, RET, Axl, Ron, PDGFR, FG...

    ≥98%
  • D170310

    10,11-Dehydrocurvularin

    Fungal metabolite produced by Penicillium speci...

    ≥98%
  • T2970

    Thrombin Receptor Agonist Peptide

    Peptide; PAR1 agonist.

    ≥95%
  • N1610

    Necrostatin-1

    RIP1 inhibitor.

    ≥99%
  • U6873

    Ursodeoxycholic Acid

    Endogenous secondary bile acid.

    ≥98%
  • D5690

    Doxazosin Mesylate

    Quinazoline; α1-adrenergic antagonist.

    ≥98%
  • P1849

    Pemetrexed Disodium

    Thymidylate synthase inhibitor, potential SHMT,...

    ≥98%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only