Trimethoprim, 98%

Name: Trimethoprim, 98%
Brand: Vaqora Chemicals
SKU: VQ-003753

About Trimethoprim, 98%

Trimethoprim is a research antibiotic (Puriss grade) carrying the CAS registry number 738-70-5 with a typical assay of ≥98%. With the molecular formula C14H18N4O3, it has a molar mass of 290.32 g/mol. Its systematic (IUPAC) name is 5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine. Alternative names: Trimpex 200 and BW 56-72.

It is supplied as a white powder. Reported physical data include a melting point of 199-205 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span selection in cell culture, microbiology research and antimicrobial studies. Our customers for this product work in academic and industrial research and diagnostics and biotechnology.

Available in 5 g, 25 g, 100 g and 1 kg packs, Trimethoprim is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Selection in cell culture
Microbiology research
Antimicrobial studies

Industries

Specifications & identifiers

Chemical identifiers
Product name	Trimethoprim, 98%
Catalogue No.	VQ-003753
CAS Number	738-70-5
IUPAC name	5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine
Molecular formula	C₁₄H₁₈N₄O₃
Molecular weight	290.32 g/mol
Exact mass	290.1379
Grade	Puriss
Purity / assay	≥98%
HSN code	29335920
InChIKey	IEDVJHCEMCRBQM-UHFFFAOYSA-N
SMILES	COC1=CC(=CC(=C1OC)OC)CC2=CN=C(N=C2N)N
PubChem CID	5578

Physical properties
Physical form	Powder
Appearance	White powder
Melting point	199-205 °C
LogP (XLogP3)	0.9
H-bond donors / acceptors	2 / 7
TPSA	106 Å²
Synonyms	2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine, Trimpex 200, BW 56-72, NIH 204, Trimogal, 2,4-Pyrimidinediamine, 5-[(3,4,5-trimethoxyphenyl)methyl]-, BW-56-72, 5-(3,4,5-Trimethoxybenzyl)-2,4-diaminopyrimidine, NIH-204, 5-[(3,4,5-Trimethoxyphenyl)methyl]-2,4-pyrimidinediamine, 2,4-Pyrimidinediamine, 5-((3,4,5-trimethoxyphenyl)methyl)-, Pyrimidine, 2,4-diamino-5-(3,4,5-trimethoxybenzyl)-

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H411Toxic to aquatic life with long lasting effects

Precautionary statements: P203, P260, P264, P270, P273, P280, P301 + P317, P318, P319, P330, P391, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 738-70-5

IP/BP/USP

Trimethoprim

CAS: 738-70-5
Formula: C₁₄H₁₈N₄O₃
MW: 290.32 g/mol

VQ-003953

Plant Culture

Trimethoprim, plant tissue culture tested

CAS: 738-70-5
Formula: C₁₄H₁₈N₄O₃
MW: 290.32 g/mol

VQ-045661

Frequently asked questions

What is the CAS number of Trimethoprim, 98%?

The CAS Registry Number of Trimethoprim, 98% is 738-70-5. It is also known as 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine, Trimpex 200, BW 56-72.

What is the molecular formula and molecular weight of Trimethoprim, 98%?

Trimethoprim, 98% has the molecular formula C14H18N4O3 and a molecular weight of 290.32 g/mol. Its IUPAC name is 5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine.

Which grade and pack sizes of Trimethoprim, 98% can I order?

We supply Trimethoprim, 98% in Puriss (≥98%) grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Trimethoprim, 98%?

Yes. Every lot of Trimethoprim, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Trimethoprim, 98% be shipped internationally?

Yes. Trimethoprim, 98% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.