SBR00024

Sigma-Aldrich

Trimethoprim Ready Made Solution

25 mg/mL in DMSO

Synonym(s):
Trimethoprim Ready Made Solution
Empirical Formula (Hill Notation):
C14H18N4O3
Molecular Weight:
290.32
Pricing and availability is not currently available.

biological source

synthetic

assay

≥98% (HPLC)

form

liquid

concentration

25 mg/mL in DMSO

Mode of action

DNA synthesis | interferes
enzyme | inhibits

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria
mycobacteria

storage temp.

−20°C

Related Categories

Application

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

Biochem/physiol Actions

Trimethoprim is a synthetic derivative of pyrimidine with antibacterial and antiprotozoal properties. 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. Trimethoprim is potentiated by Sulfonamides and the Trimethoprim-sulfamethazole combination is the most used form.

WGK Germany

WGK 2

Flash Point(F)

188.6 °F

Flash Point(C)

87 °C

Certificate of Analysis
Certificate of Origin
A Binelli et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 150(3), 329-336 (2009-06-02)
A battery of eight biomarkers was applied in the freshwater mussel Dreissena polymorpha to evaluate potential sub-lethal effects of the antimicrobial trimethoprim (TMP, 5-[3,4,5-trimethoxybenzyl]pyrimidine-2,4-diamine). Mussels were exposed for 96 h to increasing concentrations (1, 3, 10 nM) of TMP in...
Antimicroboial Drug Resistance: Sulfonamides and Trimethoprim
Skold, O.E., et al. et al.
Antimicrobial Drug Resistance, 345-358 (2017)
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...
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...
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...
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