Trimethoprim

Name: Trimethoprim
Brand: Vaqora Chemicals
SKU: VQ-003953

About Trimethoprim

Trimethoprim (CAS 738-70-5) is an antibacterial API offered by Vaqora Chemicals (IP/BP/USP grade). Formula C14H18N4O3, molecular weight 290.32 g/mol. Systematically, it is named 5-[(3,4,5-trimethoxyphenyl)methyl]pyrimidine-2,4-diamine. Common synonyms include Trimpex 200 and BW 56-72.

The product is provided as a powder. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

As an active pharmaceutical ingredient within our antibiotic and antibacterial APIs range, it is offered in IP/BP/USP grade for formulation development, generic drug programmes and commercial manufacturing. Our customers for this product work in pharmaceutical manufacturing.

We offer Trimethoprim in 1 kg, 5 kg and 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmaceutical formulation
Generic drug development

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Trimethoprim
Catalogue No.	VQ-003953
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	IP/BP/USP
HSN code	2941
InChIKey	IEDVJHCEMCRBQM-UHFFFAOYSA-N
SMILES	COC1=CC(=CC(=C1OC)OC)CC2=CN=C(N=C2N)N
PubChem CID	5578

Physical properties
Physical form	Powder
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

Puriss

Trimethoprim, 98%

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

VQ-003753

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?

The CAS Registry Number of Trimethoprim 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?

Trimethoprim 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 can I order?

We supply Trimethoprim in IP/BP/USP grade, in 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Trimethoprim?

Yes. Every lot of Trimethoprim 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 be shipped internationally?

Yes. Trimethoprim 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.