• 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
100 g $524.50 In stock
25 g $187.30 In stock
5 g $60.00 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

  • A6058

    Apoptosis Activator 2

    Apoptosis inducing agent.
    ≥98%
  • S1605

    Secretin, human

    Endogenous peptide hormone, involved in water home...
    ≥95%
  • F1745

    Felodipine

    Dihydropyridine; L-type Ca2+ channel blocker.
    ≥98%
  • R2815

    Recombinant HIV-1 “0” group consensus

    Recombinant HIV-1 antigen fragment.
    ≥95%
  • Z4900

    ZM-447439 Trihydrate

    AurKA/B inhibitor.
    ≥99%
  • C0248

    Calcineurin Substrate

    Peptide used to measure in vitro calcineurin activ...
    ≥96%
  • B1545

    Benzalkonium Bromide

    Quaternary ammonium cationic surfactant, dissociat...
    ≥95%
  • A7658

    Atorvastatin Calcium Trihydrate

    Statin; HMG-CoA reductase inhibitor.
    ≥98%
  • E5217

    β-Endorphin, human

    Endogenous opioid peptide; μOR agonist.
    ≥95%
  • A0834

    Ac-IETD-pNA

    Caspase 8 substrate.
    ≥95%
  • AS107

    Caffeic Acid Esters Standards Kit

    Caffeic Acid Esters Standards Kit Contents: -Colum...
  • R2353

    RF-NH2

    RF-amide peptide; potential GPR147 agonist, potent...
    ≥95%
  • W5769

    Wortmannin

    Steroid produced by Penicillum; PI3K, mTOR, DNA-PK...
    ≥97%
  • N3225

    Nigericin Sodium

    Polyether cationic ionophore.
    ≥98%
  • A7208

    Ascomycin

    FK506 analog; calcineurin inhibitor.
    ≥98%
  • E5575

    Entacapone

    COMT inhibitor.
    ≥98%
  • S7909

    Suc-LEPF-pNA

    Peptide.
    ≥98%
  • G4400

    Glabridin

    Isoflavonoid found in Glycyrrhiza; GABA-A positive...
    ≥98%
  • E537333

    Enniatin A1

    Mycotoxin contaminant found in cereal grains.
    ≥96%
  • L1884

    Levosimendan

    Ca2+ sensitizer; ATP-sensitive K+ channel activato...
    ≥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