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Merck

SBR00024

Sigma-Aldrich

Trimethoprim Ready Made Solution

25 mg/mL in DMSO

Synonym(e):

Trimethoprim Ready Made Solution

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About This Item

Empirische Formel (Hill-System):
C14H18N4O3
Molekulargewicht:
290.32
UNSPSC-Code:
51285203
NACRES:
NA.76

Biologische Quelle

synthetic

Assay

≥98% (HPLC)

Form

liquid

Konzentration

25 mg/mL in DMSO

Farbe

colorless to faint yellow

Wirkungsspektrum von Antibiotika

Gram-negative bacteria
Gram-positive bacteria
mycobacteria

Wirkungsweise

DNA synthesis | interferes
enzyme | inhibits

Lagertemp.

−20°C

InChI

1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18

InChIKey

IEDVJHCEMCRBQM-UHFFFAOYSA-N

Allgemeine Beschreibung

Trimethoprim, an aminopyrimidine antibiotic belonging to the methoxybenzenes group, exhibits activity against a broad spectrum of both gram-negative and gram-positive aerobic bacteria. As a synthetic derivative of pyrimidine, it plays a multifaceted role as an inhibitor, xenobiotic, and allergen, featuring antibacterial, diuretic, and antiprotozoal properties. Trimethoprim selectively targets dihydrofolate reductase (DHFR), diminishing the levels of tetrahydrofolate that supply one-carbon units crucial for biosynthesis processes, including nucleotides, proteins, and panthotenate, especially in prokaryotic microorganisms.

Additionally, it is frequently employed in combination with sulfamethoxazole (sc-208405) to effectively inhibit the growth of Staphylococcus aureus, functioning as a dihydrofolate reductase inhibitor. This versatile compound finds applications in metabolomics, cell biology, and biochemical research.

Anwendung

Trimethoprim is used at a final concentration of ~4μg/mL for antibacterial activty.

Biochem./physiol. Wirkung

Mode of Action: Trimethoprim is an inhibitor of bacterial dihydrofolate reductase (DHFR), interfering with the conversion of dihydrofolate (DHF) to tetrahydrofolate (THF). THF is an essential precursor in the thymidine synthesis pathway, interference with this pathway inhibits bacterial DNA synthesis. Trimethoprim′s affinity for bacterial DHFR is several thousand times greater than its affinity for human DHFR.

Activity Spectrum: Effective against Gram-negative bacteria, Gram-positive bacteria, and mycobacteria

Some of the pathogens that trimethoprim can be effective against include:
  • Escherichia coli (E. coli)
  • Staphylococcus aureus (including methicillin-resistant Staphylococcus aureus or MRSA)
  • Streptococcus pneumoniae
  • Haemophilus influenzae
  • Enterococcus faecalis
  • Klebsiella species
  • Proteus species

Leistungsmerkmale und Vorteile

  • High-quality antibiotic suitable for multiple research applications
  • Ideal for Cell Biology, Metabolomics, and Biochemical research.

Sonstige Hinweise

For additional information on our range of Biochemicals, please complete this form.

Lagerklassenschlüssel

10 - Combustible liquids

WGK

WGK 2

Flammpunkt (°F)

188.6 °F

Flammpunkt (°C)

87 °C


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Stephen Hawser et al.
Biochemical pharmacology, 71(7), 941-948 (2005-12-20)
Although only a few DHFR inhibitors have progressed as antibiotics to the market there is much renewed interest in the discovery and development of new generation DHFR inhibitors as antibacterial agents. This article describes the success in exploiting DHFR as
The binding of trimethoprim to bacterial dihydrofolate reductase.
D J Baker et al.
FEBS letters, 126(1), 49-52 (1981-04-06)
Mahamadou A Thera et al.
The Journal of infectious diseases, 192(10), 1823-1829 (2005-10-20)
Trimethoprim-sulfamethoxazole (TS) prophylaxis is recommended for persons living with human immunodeficiency virus infection and acquired immunodeficiency syndrome in Africa. TS and the antimalarial combination sulfadoxine-pyrimethamine (SP) share mechanisms of action and resistance patterns, and concerns about the impact of TS
R N Brogden et al.
Drugs, 23(6), 405-430 (1982-06-01)
Trimethoprim, which has been widely available for several years in combination with sulphamethoxazole as co-trimoxazole, is now available for use alone in the treatment of acute uncomplicated urinary tract infections. Trimethoprim, which is active against a wide range of Gram-positive
Antimicroboial Drug Resistance: Sulfonamides and Trimethoprim
Skold, O.E., et al. et al.
Antimicrobial Drug Resistance, 345-358 (2017)

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