4-Oxo-2-thioxo-3-thiazolidinylacetic acid
4-Oxo-2-thioxo-3-thiazolidinylacetic acid (CAS: 5718-83-2), with the molecular formula C5H5NO3S2 and a molecular weight of 191.23 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in chemical synthesis, particularly within the realm of thiazolines and thiazolidines. This compound is recognised for its utility in developing novel molecular structures for various research and development applications.
- IUPAC
- Rhodanine-3-acetic acid
- Synonyms
- Rhodanine-3-acetic acid

Chemical Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its structure makes it suitable for incorporation into various reaction pathways in medicinal chemistry and materials science.
Heterocyclic Chemistry Research
Serves as a foundational component for exploring novel thiazolidine and thiazoline derivatives. Researchers leverage its unique chemical properties to investigate new synthetic methodologies and compound libraries.
Building Block for Novel Compounds
Acts as a versatile building block for constructing diverse molecular architectures. Its functional groups allow for further derivatization, enabling the creation of compounds with tailored properties for specific applications.
| Molecular weight | 191.23 |
|---|---|
| Empirical formula | C5H5NO3S2 |
| Assay | ≥99% |
| Melting point | 145-148 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 4-Oxo-2-thioxo-3-thiazolidinylacetic acid primarily used for?
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This compound is primarily used as a building block in chemical synthesis and for research in heterocyclic chemistry, particularly involving thiazolines and thiazolidines.
What are the CAS number and formula for 4-Oxo-2-thioxo-3-thiazolidinylacetic acid?
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The CAS number is 5718-83-2 and the molecular formula is C5H5NO3S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Oxo-2-thioxo-3-thiazolidinylacetic acid with an assay of ≥99%. We do not represent this product as meeting USP, BP, or EP pharmacopoeial standards.
How should 4-Oxo-2-thioxo-3-thiazolidinylacetic acid be handled?
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Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation. This compound is a Warning, causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335).
Is 4-Oxo-2-thioxo-3-thiazolidinylacetic acid available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Oxo-2-thioxo-3-thiazolidinylacetic acid.
How can I request a sample or quote?
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To request a sample or a quote for 4-Oxo-2-thioxo-3-thiazolidinylacetic acid, please contact our sales department via the website or email.
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