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92131

Sigma-Aldrich

Trimethoprim

≥99.0% (HPLC)

Synonym(s):

2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine, NSC 106568

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About This Item

Empirical Formula (Hill Notation):
C14H18N4O3
CAS Number:
738-70-5
Molecular Weight:
290.32
Beilstein:
625127
EC Number:
212-006-2
MDL number:
MFCD00036761
UNSPSC Code:
51285203
PubChem Substance ID:
57653467
NACRES:
NA.85

biological source

synthetic

Quality Level

200

Assay

≥99.0% (HPLC)

form

powder

color

white to light yellow

mp

≥199.0 °C

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria
mycobacteria

Mode of action

DNA synthesis | interferes
enzyme | inhibits

storage temp.

2-8°C

SMILES string

COc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC

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)

InChI key

IEDVJHCEMCRBQM-UHFFFAOYSA-N

Gene Information

human ... DHFRP1(573971) , KCNH1(3756)
rat ... Dhfr(24312)

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General description

Chemical structure: pyrimidine

Application

Trimethoprim is primarily used as an antibacterial agent. It is used in susceptibility studies of Mycobacterium tuberculosis and mechanism of resistance studies in Haemophilus influenzae .
Primarily used as an antibacterial agent. Dihydrofolate reductase inhibitor with selectivity for the prokaryote enzyme.

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.

Packaging

1g,5g,25g

Other Notes

Keep container tightly closed in a dry and well-ventilated place.Light sensitive. Store under inert gas. Moisture sensitive. Product is sensitive to light and moisture.

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Warning

Hazard Statements

H302,H361d

Hazard Classifications

Acute Tox. 4 Oral - Repr. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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R de Groot et al.
Antimicrobial agents and chemotherapy, 32(4), 477-484 (1988-04-01)
We studied 10 trimethoprim-resistant (Tmpr) Haemophilus influenzae isolates for which agar dilution MICs were 10 to greater than 200 micrograms/ml. Trimethoprim resistance was transferred from two Tmpr H. influenzae isolates to a Tmps strain by conjugation or transformation. Wild-type Tmpr
Susceptibility of Mycobacterium tuberculosis to sulfamethoxazole, trimethoprim and their combination over a 12 year period in Taiwan.
Tsi-Shu Huang1,2,3, Calvin M. Kunin, et al.
The Journal of Antimicrobial Chemotherapy, 10, 633-637 (2011)
Kate S Baker et al.
The Lancet. Infectious diseases, 15(8), 913-921 (2015-05-06)
Shigellosis is an acute, severe bacterial colitis that, in high-income countries, is typically associated with travel to high-risk regions (Africa, Asia, and Latin America). Since the 1970s, shigellosis has also been reported as a sexually transmitted infection in men who
Kyuho Han et al.
Nature methods, 11(1), 86-93 (2013-11-12)
Protein concentrations are often regulated by dynamic changes in translation rates. Nevertheless, it has been challenging to directly monitor changes in translation in living cells. We have developed a reporter system to measure real-time changes of translation rates in human
O Sköld
Veterinary research, 32(3-4), 261-273 (2001-07-04)
Sulfonamides and trimethoprim have been used for many decades as efficient and inexpensive antibacterial agents for animals and man. Resistance to both has, however, spread extensively and rapidly. This is mainly due to the horizontal spread of resistance genes, expressing
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