Trimethoprim sulfate  (Synonyms: 甲氧苄啶硫酸盐)

Trimethoprim sulfate is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim sulfate is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim sulfate has the potential for the research of urinary tract infections, Shigellosis and Pneumocystis pneumonia. Trimethoprim sulfate can inhibit infection of Influenza A virus in chick embryo when combinated with zinc^[1][2][3][4].

Dihydrofolate reductase, Bacteria^[1]
Influenza A virus^[4]

Trimethoprim interrupts folate metabolism by inhibition of the activity of dihydrofolase reductase (DHFR), which reduces dihydrofolate to tetrahydrofolate (THF)^[1].
Trimethoprim (3 μg/mL; 1 h) induces protein aggregation and main heat shock proteins (Hsps) in E. coli cells, which indicates that Trimethoprim sulfate presence leads to protein misfolding^[1].
Trimethoprim (1.5-3 μg/mL; 1 h) causes induction of DnaK, DnaJ, GroEL, ClpB, and IbpA/B Hsps in E. coli cells exposed to folate and heat stress^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Trimethoprim (10 mg/kg; i.v.; once every 12 h; 3 d) shows antibacterial activity against H. influenzae, S. pneumoniae, E. coli and N. meningitidis in infected mice^[2].
Trimethoprim can be connected with the thiomaltose (TM-TMP) and shows stability with a half-life of about 1 hour in complete serum, and has an MIC value around 1 μM against E. coli^[2].
Trimethoprim (10 mg/mL; 0.5 mL; inject with Trimethoprim-Zn combined suspension) decreases the virus titer and increases the survival rate of chicken embryo^[4].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

388.40

C₁₄H₂₀N₄O₇S

56585-33-2

甲氧苄啶硫酸盐

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Laskowska, E., et al., Trimethoprim sulfate induces heat shock proteins and protein aggregation in E. coli cells. Curr Microbiol, 2003. 47(4): p. 286-9.  [Content Brief]

  [2]. Xiaojian Wang, et al. A Trimethoprim sulfate Conjugate of Thiomaltose Has Enhanced Antibacterial Efficacy In Vivo. Bioconjug Chem. 2018 May 16;29(5):1729-1735.  [Content Brief]

  [3]. Brogden, R.N., et al., Trimethoprim sulfate: a review of its antibacterial activity, pharmacokinetics and therapeutic use in urinary tract infections. Drugs, 1982. 23(6): p. 405-30.  [Content Brief]

  [4]. El Habbal MH. Combination therapy of zinc and trimethoprim inhibits infection of influenza A virus in chick embryo. Virol J. 2021 Jun 3;18(1):113.  [Content Brief]