4-Mercaptopyridine, 95%

Name: 4-Mercaptopyridine, 95%
Brand: Vaqora Chemicals
SKU: VQ-011814

About 4-Mercaptopyridine, 95%

4-Mercaptopyridine (CAS 4556-23-4) is a pyridine derivative offered by Vaqora Chemicals, specified at 95% purity. With the molecular formula C5H5NS, it has a molar mass of 111.17 g/mol. The IUPAC name is 1H-pyridine-4-thione. Alternative names: 4-Pyridinethiol and 4-Thiopyridine.

The material typically appears as light yellow to brown to dark green powder or crystals or chunks. Literature values give a melting point of 180 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis and API synthesis. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 4-Mercaptopyridine in 1 g, 5 g and 25 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	4-Mercaptopyridine, 95%
Catalogue No.	VQ-011814
CAS Number	4556-23-4
IUPAC name	1H-pyridine-4-thione
Molecular formula	C₅H₅NS
Molecular weight	111.17 g/mol
Exact mass	111.0143
Purity / assay	95%
HSN code	29335990
InChIKey	FHTDDANQIMVWKZ-UHFFFAOYSA-N
SMILES	C1=CNC=CC1=S
PubChem CID	2723889

Physical properties
Physical form	Crystalline
Appearance	Light yellow to brown to dark green powder or crystals or chunks
Melting point	180 °C
LogP (XLogP3)	-0.7
H-bond donors / acceptors	1 / 2
TPSA	44.1 Å²
Synonyms	4-Pyridinethiol, 4-Thiopyridine, 4-Thiopyridone, 4-PS cpd, Pyridine-4-thiol, Pyridine-4(1H)-thione, 4(1H)-Pyridinethione, 4-Pyridinethione, Pyridine, 4-mercapto-, 4-Sulfanylpyridine, 4mercaptopyridine, 4-Thiopy

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, 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

Frequently asked questions

What is the CAS number of 4-Mercaptopyridine, 95%?

The CAS Registry Number of 4-Mercaptopyridine, 95% is 4556-23-4. It is also known as 4-Pyridinethiol, 4-Thiopyridine, 4-Thiopyridone.

What is the molecular formula and molecular weight of 4-Mercaptopyridine, 95%?

4-Mercaptopyridine, 95% has the molecular formula C5H5NS and a molecular weight of 111.17 g/mol. Its IUPAC name is 1H-pyridine-4-thione.

Which grade and pack sizes of 4-Mercaptopyridine, 95% can I order?

We supply 4-Mercaptopyridine, 95% in (95%) grade, in 1 g, 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Mercaptopyridine, 95%?

Yes. Every lot of 4-Mercaptopyridine, 95% 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 4-Mercaptopyridine, 95% be shipped internationally?

Yes. 4-Mercaptopyridine, 95% 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.