• 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

  • T0110

    Taxane Standard Mixture

    Mixture of taxanes.

    ≥98%
  • P005095

    N-Debenzoylpaclitaxel

    Paclitaxel derivative

    ≥95%
  • B5609

    Boc-GRR-AMC

    Peptide, protease substrate.

    ≥98%
  • F4532

    Flibanserin

    5-HT1A agonist, 5-HT2A antagonist.

    ≥97%
  • F8147

    Fulvestrant

    Induces ER degradation.

    ≥98%
  • S8044

    R,S-Sulforaphane, High Purity

    Phase II enzyme inducer; Nrf2 activator; antiox...

    ≥99%
  • A1096

    Acyclovir

    Nucleoside (guanosine) analog; DNA chain termin...

    ≥98%
  • C0269

    β-Carotene

    Red-orange terpene pigment found in various pla...

    ≥98%
  • E537332

    Enniatin A

    Mycotoxin contaminant found in cereal grains.

    ≥98%
  • N0161

    β-Naphthoflavone

    AhR agonist.

    ≥98%
  • I7458

    1-Isothiocyanato-9-(methylsulfinyl)-nonane

    ITC, sulforaphane analog.

    ≥98%
  • S1609

    Securinine

    Alkaloid found in Securinega; potential GABA-A ...

    ≥98%
  • C4646

    Clofarabine

    Nucleoside (adenosine) analog; DNA chain termin...

    ≥98%
  • S4932

    SMI-4a

    Thiazolidine; Pim kinase inhibitor.

    ≥99%
  • C7098

    Crystalline peptide

    Dipeptide.

    ≥95%
  • A0967

    Adrenocorticotropic Hormone (1-17), human

    Endogenous peptide hormone fragment, involved i...

    ≥95%
  • T6931

    Triclosan

    Diarylether; bacterial ENR binder, fatty acid s...

    ≥98%
  • H9863

    Hyperforin Dicyclohexylammonium

    Stable salt form of hyperforin, a compound foun...

    ≥97%
  • G1210

    GDC-0623

    MEK inhibitor.

    ≥98%
  • I7658

    1-Isothiocyanato-9-(methylsulfonyl)-nonane

    Synthetic ITC, erysolin analog.

    ≥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