Molekula
2-Mercaptopyridine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2-Mercaptopyridine is a sulfur-containing heterocyclic compound used in organic synthesis, particularly in the preparation of pharmaceuticals and ligands for metal complexes. It is a white to pale yellow solid with a distinct odor. Available in 10 g, 100 g, and 1 kg quantities, it has a CAS number of 2637-34-5, molecular formula C5H4NSH, and molecular weight of 111.16 g/mol. Store at 2 to 8 °C. Molekula supplies 2-Mercaptopyridine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Light yellow to yellow crystalline powder |
| Melting Point | 127 - 130°C |
| Identification | Conforms to reference |
| Loss on Drying | ≤1.0% |
| Purity | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 0.00863 mmHg |
Source: PubChem CID 2723698 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 19148143 |
| CAS Number | 2637-34-5 |
| IUPAC Name | 1H-pyridine-2-thione |
| EC Number | 220-131-9 |
| Molecular Formula | C5H4NSH |
| Molecular Weight | 111.16 |
| Exact Mass | 111.0143 |
| SMILES | C1=CC(=S)NC=C1 |
| InChIKey | WHMDPDGBKYUEMW-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H5NS/c7-5-3-1-2-4-6-5/h1-4H,(H,6,7) |
| PubChem CID | 2723698 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2933.39.9200 |
| Tariff Code | 2933399999 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,2-dihydropyridine-2-thione
- 1H-pyridine-2-thione
- 2-Pyridinethiol
- 2-Pyridyl mercaptan
- 2-Thiopyridine
- 2-Thiopyridone
- Pyrid-2-thione
- Pyridine-2-thiol
- pyridine-2-thione
- Pyridinethione
Frequently asked questions
What is 2-Mercaptopyridine used for?
It is primarily used as a ligand in coordination chemistry and as an intermediate in the synthesis of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of 2-Mercaptopyridine?
The formula is C5H4NSH and the molecular weight is 111.16 g/mol.
How should 2-Mercaptopyridine be stored?
It should be stored at temperatures between 2 and 8 °C to maintain stability.
What grade of 2-Mercaptopyridine does Molekula supply?
Molekula supplies 2-Mercaptopyridine in technical grade; custom grades are available upon request.
Can Molekula supply 2-Mercaptopyridine in bulk?
Yes, Molekula can supply 2-Mercaptopyridine in bulk quantities—please contact us for pricing and availability.
What documentation comes with a purchase of 2-Mercaptopyridine?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation is available upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.