• 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

  • I7258

    Isoflurane

    Ca2+ ATPase and ATP-sensitive K+ channel activa...

    ≥98%
  • E622698

    Eprosartan Mesylate

    Nonpeptide angiotensin II receptor antagonist

    ≥99%
  • K1677

    Ketoprofen

    NSAID; COX-1/2 and lactate dehydrogenase inhibi...

    ≥98%
  • O4549

    Olmesartan Medoxomil

    AT1 inhibitor.

    ≥98%
  • O9497

    Oxytocin

    Endogenous neuropeptide hormone, involved in so...

    ≥95%
  • A9978

    Aztreonam

    β-lactam; penicillin binding protein inhibitor...

    ≥96%
  • K0117

    Kaempferol

    Flavonol found in various plant sources.

    ≥98%
  • M7530

    [Nle4, D-Phe7]-α-Melanocyte Stimulating Hormone

    Semi-synthetic peptide, melanocortin analog; MC...

    ≥98%
  • T5608

    α-Tocotrienol

    Antioxidant, vitamin E derivative found in vege...

    ≥98%
  • T1002

    2-Debenzoyl Paclitaxel-2-(2-Methyl-2-Butenoate)

    Synthesis intermediate

    ≥95%
  • A0776

    ABT-199

    BH3 mimetic; Bcl-2 inhibitor.

    ≥99%
  • S020665

    Saquinavir

    Protease inhibitor

    ≥99%
  • V1769

    Verapamil Hydrochloride

    L-type Ca2+ channel blocker.

    ≥98%
  • B8174

    Butylated Hydroxyanisole

    Commercial food additive, antioxidant.

    ≥96%
  • M1875

    S-(N-Methylsulfinylbutylthiocarbamoyl)-glutathione

    Glutathione-sulforaphane conjugate, antioxidant...

    ≥98%
  • C9778

    Cytarabine

    Pyrimidine nucleoside (cytidine) analog; DNA ch...

    ≥98%
  • A2046

    Aflatoxin B2

    Mycotoxin produced by species of Aspergillus; D...

    ≥98%
  • T1855

    Tentoxin

    Cyclic peptide mycotoxin produced by Alternaria...

    ≥98%, HPLC
  • C5654

    Concanavalin A

    Lectin found in Canavelia, plant mitogen that b...

  • T6811

    Tranexamic Acid

    Plasminogen inhibitor.

    ≥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