2-Thiobarbituric acid
2-Thiobarbituric acid (CAS: 504-17-6; Formula: C4H4N2O2S; MW: 144.15) is a heterocyclic organic compound and a key pyrimidine derivative. It functions as a versatile building block in chemical synthesis, particularly in the creation of more complex heterocyclic structures. Its chemical properties make it a valuable intermediate for researchers and manufacturers in various scientific disciplines requiring specialised chemical synthesis.
- IUPAC
- 4,6-Dihydroxy-2-mercaptopyrimidine,4,6-Dihydroxypyrimidine-2-thiol,TBA
- Synonyms
- 4,6-Dihydroxy-2-mercaptopyrimidine4,6-Dihydroxypyrimidine-2-thiolTBA

Chemical Synthesis
Serves as a crucial intermediate and building block in organic synthesis for creating diverse molecular structures, particularly heterocyclic compounds.
Research and Development
Utilised in laboratory settings for R&D purposes, enabling the exploration of new chemical pathways and the development of novel compounds.
Pharmaceutical Intermediates
Acts as a precursor or intermediate in the synthesis of potential pharmaceutical agents, contributing to drug discovery and development processes.
| Molecular weight | 144.15 |
|---|---|
| Empirical formula | C4H4N2O2S |
| Assay | ≥98% |
| Melting point | 245 °C (dec.)(lit.) |
| Transport (UN / ADR) | UN 3335 |
|---|---|
| Water hazard class (WGK, DE) | 2 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2-Thiobarbituric acid used for?
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2-Thiobarbituric acid is primarily used as a building block in chemical synthesis and as an intermediate in research and development, including potential pharmaceutical applications.
What is the CAS number and formula for 2-Thiobarbituric acid?
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The CAS number for 2-Thiobarbituric acid is 504-17-6 and its empirical formula is C4H4N2O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Thiobarbituric acid with an assay of ≥98%. We do not represent this product as USP, BP, or EP grade.
How should 2-Thiobarbituric acid be handled?
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2-Thiobarbituric acid is classified as hazardous. Handle with appropriate personal protective equipment in a well-ventilated area to avoid dust inhalation and skin/eye contact, following relevant safety data sheets.
Is 2-Thiobarbituric acid a controlled substance?
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The provided data does not indicate that 2-Thiobarbituric acid is a controlled substance.
How is 2-Thiobarbituric acid packed and shipped?
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2-Thiobarbituric acid is securely packed for export, adhering to international shipping regulations for chemical products.
How can I request a sample or quote for 2-Thiobarbituric acid?
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To request a sample or a quote for 2-Thiobarbituric acid, please contact our sales department through the website or by phone.
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