2-Mercaptopyridine-3-carboxylic acid
2-Mercaptopyridine-3-carboxylic acid (CAS: 38521-46-9, C6H5NO2S) is a heterocyclic organic compound with a molecular weight of 155.17 g/mol. It serves as a valuable building block in organic synthesis, particularly within the realm of chemical and pharmaceutical research. Its structure makes it useful for creating more complex molecules, finding application in the development of novel chemical entities and advanced materials.
- IUPAC
- 2-Mercaptonicotinic acid
- Synonyms
- 2-Mercaptonicotinic acid

Organic Synthesis Intermediate
This compound functions as a key intermediate in the synthesis of diverse organic molecules. Its reactive functional groups allow for various chemical transformations, making it suitable for constructing complex molecular architectures in research and development settings.
Heterocyclic Chemistry
As a pyridine derivative, it is employed in the study and synthesis of heterocyclic compounds. These structures are fundamental to many biologically active molecules and advanced materials, highlighting its importance in synthetic chemistry.
Building Block for Novel Compounds
Utilised as a foundational building block, 2-Mercaptopyridine-3-carboxylic acid facilitates the creation of novel chemical entities. Its structure is instrumental in research aimed at discovering new pharmaceuticals or functional materials.
| Molecular weight | 155.17 |
|---|---|
| Empirical formula | C6H5NO2S |
| Melting point | 263-265 °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) | 26-37/39 |
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-Mercaptopyridine-3-carboxylic acid used for?
+
2-Mercaptopyridine-3-carboxylic acid is primarily used as a building block and intermediate in organic synthesis, particularly for creating novel heterocyclic compounds in chemical and pharmaceutical research.
What is the CAS number and formula for 2-Mercaptopyridine-3-carboxylic acid?
+
The CAS number is 38521-46-9 and the empirical formula is C6H5NO2S.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this chemical for research and development purposes. The specific grade and purity should be confirmed with a sales representative; it is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should 2-Mercaptopyridine-3-carboxylic acid be handled?
+
This compound is classified as irritating to the skin, eyes, and respiratory system (H315, H319, H335). When handling, wear appropriate personal protective equipment, including a dust mask (N95 recommended), eyeshields, and gloves. Ensure adequate ventilation.
Is 2-Mercaptopyridine-3-carboxylic acid a controlled substance?
+
Based on the provided data, there is no indication that 2-Mercaptopyridine-3-carboxylic acid is a controlled substance.
How is this chemical shipped and exported?
+
Tech Serve Solutions is a global supplier and exporter of fine chemicals. Specific shipping and export details for 2-Mercaptopyridine-3-carboxylic acid will be provided upon inquiry, adhering to all relevant regulations.
How can I request a sample or quote?
+
To request a sample or a quote for 2-Mercaptopyridine-3-carboxylic acid, please contact our sales department through the website or via direct inquiry.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis