92131 Sigma

Trimethoprim

crystallized, ≥99.0% (HPLC)

DOWNLOAD MSDS (PDF)

Synonym: 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine

  • CAS Number 738-70-5

  • Empirical Formula (Hill Notation) C14H18N4O3

  • Molecular Weight 290.32

  •  Beilstein Registry Number 625127

  •  EC Number 212-006-2

  •  MDL number MFCD00036761

  •  PubChem Substance ID 24889615

Properties

Related Categories Antibacterial, Antibiotics, Antibiotics A to Z, Antibiotics T-Z, Bioactive Small Molecules,
assay   ≥99.0% (HPLC)
quality   crystallized
mp   199-203 °C
solubility   chloroform/ethanol (1:1): soluble50 mg/mL, clear, colorless
storage temp.   2-8°C
Gene Information   human ... DHFRP1(573971), KCNH1(3756)
rat ... Dhfr(24312)

Description

Application

Primarily used as an antibacterial agent. Dihydrofolate reductase inhibitor with selectivity for the prokaryote enzyme.

Trimethoprim is primarily used as an antibacterial agent. It is used in susceptibility studies of Mycobacterium tuberculosis 1 and mechanism of resistance studies in Haemophilus influenzae 2.

Biochem/physiol Actions

Inhibits the synthesis of tetrahydrofolate by procaryote specific dihydrofolate reductase (DHFR).

Trimethoprim is a dihydrofolate reductase inhibitor with selectivity for the prokaryote enzyme.

Other Notes

Specific inhibitor of formulation. Widely used in studies on dihydrofolate reductase3,4.

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