• 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

  • V2792

    VGX-1027

    TLR4 inhibitor.

    ≥98%
  • D183734

    7-O-Desmethyl Rapamycin

    Rapamycin impurity

    ≥85%
  • Z3463

    Ziprasidone

    5-HT1A agonist, D2, 5-HT1D antagonist.

    ≥98%
  • C0147

    Calcium Folinate Pentahydrate

    Folate source co-administered with methotrexate...

    ≥95%
  • K0282

    Kavalactones Mixture

    Mixture of kavalactones found in Piper methysti...

    ≥98%
  • R3449

    Rimonabant Hydrochloride

    CB1 inverse agonist.

    ≥98%
  • C2956

    Cholecalciferol

    Endogenous vitamin D prodrug.

    ≥98%
  • D509921

    DMXAA

    Mouse selective STING agonist.

    ≥99%
  • T2970

    Thrombin Receptor Agonist Peptide

    Peptide; PAR1 agonist.

    ≥95%
  • S8251

    Sulfluramid

    Perfluorinated insecticide.

    ≥95%
  • L5648

    Lomustine

    Nitrosourea, DNA alkylator.

    ≥98%
  • L3456

    γ-Linolenic Acid (6c, 9c, 12c)

    Omega-6 fatty acid found in vegetable oils; PPA...

    ≥98%
  • A2500

    AG-1478

    EGFR inhibitor.

    ≥98%
  • C0016

    Caerulomycin A

    Bipyridamine toxin.

    ≥96%
  • T4800

    TM3-0089 Sodium Monohydrate

    CRTH2 inhibitor.

    ≥98%
  • H1695

    S-Hexylglutathione

    Glutathione-S-transferase inhibitor.

    ≥98%
  • C2970

    Chrysophanol

    Anthraquinone found in Rheum.

    ≥98%
  • V0146

    Valsartan

    AT1 inhibitor.

    ≥98%
  • P5878

    Potassium Canrenoate

    Aldosterone antagonist.

    ≥98%
  • S0133

    Saikosaponin C

    Triterpene saponin found in Bupleurum.

    ≥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