2-Thiouracil, 99%

Name: 2-Thiouracil, 99%
Brand: Vaqora Chemicals
SKU: VQ-003236

About 2-Thiouracil, 99%

Listed under CAS 141-90-2, 2-Thiouracil is a molecular biology reagent available from Vaqora Chemicals in Synthesis grade at a purity of 99%. With the molecular formula C4H4N2OS, it has a molar mass of 128.15 g/mol. Its systematic (IUPAC) name is 2-sulfanylidene-1H-pyrimidin-4-one. It is also known as 4-Hydroxy-2-mercaptopyrimidine or 2-thioxo-2,3-dihydropyrimidin-4(1H)-one.

The material typically appears as white to yellow powder or crystals. Literature values give a melting point of above 300 °C. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

It is commonly used for electrophoresis, DNA/RNA workflows, protein analysis and pharmaceutical synthesis. It is used across academic and industrial research and diagnostics and biotechnology.

We offer 2-Thiouracil in 25 g, 100 g, 500 g and 5 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Electrophoresis
DNA/RNA workflows
Protein analysis
Pharmaceutical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	2-Thiouracil, 99%
Catalogue No.	VQ-003236
CAS Number	141-90-2
IUPAC name	2-sulfanylidene-1H-pyrimidin-4-one
Molecular formula	C₄H₄N₂OS
Molecular weight	128.15 g/mol
Exact mass	128.0044
Grade	Synthesis
Purity / assay	99%
HSN code	29335990
InChIKey	ZEMGGZBWXRYJHK-UHFFFAOYSA-N
SMILES	C1=CNC(=S)NC1=O
PubChem CID	1269845

Physical properties
Physical form	Crystalline
Appearance	White to yellow powder or crystals
Melting point	>300 °C
LogP (XLogP3)	-0.3
H-bond donors / acceptors	2 / 2
TPSA	73.2 Å²
Synonyms	4-Hydroxy-2-mercaptopyrimidine, 2-thioxo-2,3-dihydropyrimidin-4(1H)-one, 2-Mercapto-4-hydroxypyrimidine, 2-Mercapto-4-pyrimidone, 4(1H)-Pyrimidinone, 2,3-dihydro-2-thioxo-, 6-Thiouracil, 2-Mercapto-4-pyrimidinol, Uracil, 2-thio-, 4-Hydroxy-2-pyrimidinethiol, 2,3-Dihydro-2-thioxo-4(1H)-pyrimidinone, 6-Hydroxy-2-mercaptopyrimidine, 2-Thio-1,3-pyrimidin-4-one

Safety & hazard information (GHS)

Health hazard

Signal word: Warning

Hazard statements

H351Suspected of causing cancer

Precautionary statements: P203, P280, P318, 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 141-90-2

HPLC

2-Thiouracil, for HPLC >98%

CAS: 141-90-2
Formula: C₄H₄N₂OS
MW: 128.15 g/mol

VQ-045925

Frequently asked questions

What is the CAS number of 2-Thiouracil, 99%?

The CAS Registry Number of 2-Thiouracil, 99% is 141-90-2. It is also known as 4-Hydroxy-2-mercaptopyrimidine, 2-thioxo-2,3-dihydropyrimidin-4(1H)-one, 2-Mercapto-4-hydroxypyrimidine.

What is the molecular formula and molecular weight of 2-Thiouracil, 99%?

2-Thiouracil, 99% has the molecular formula C4H4N2OS and a molecular weight of 128.15 g/mol. Its IUPAC name is 2-sulfanylidene-1H-pyrimidin-4-one.

Which grade and pack sizes of 2-Thiouracil, 99% can I order?

We supply 2-Thiouracil, 99% in Synthesis (99%) grade, in 25 g, 100 g, 500 g, 5 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 2-Thiouracil, 99%?

Yes. Every lot of 2-Thiouracil, 99% 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 2-Thiouracil, 99% be shipped internationally?

Yes. 2-Thiouracil, 99% 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.