2-Pyridinethiol 1-oxide
Also known as: Pyrithione, 2-Mercaptopyridine N-oxide, 2-Pyridinethiol N-oxide, 1-Hydroxy-2-pyridinethione, 2-Thiopyridine-N-oxide, Omadine, Pyridine-2-thiol 1-oxide, MercaptopyridineNoxide, N-Hydroxy-2-thiopyridone, 2-Pyridinethiol, 1-oxide, 2-mercaptopyridine 1-oxide, 2-mercaptopyridine-1-oxide, 2-mercapto-pyridine N-oxide, Pyridine-2-thiol N-oxide, pyridine-N-oxide-2-thiophenol, EINECS 214-329-4, MFCD00006196
2-Pyridinethiol 1-oxide (CAS 1121-31-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NOS and a molecular weight of 127.164 g/mol. Key properties include a melting point of 70-72 °C, a boiling point of 350.2±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 165.6±20.4 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1121-31-9
- Jingsj CID
- J-48167-4
- Molecular Formula
- C5H5NOS
- Molecular Weight
- 127.164 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 70-72 °C |
|---|---|
| Boiling Point | 350.2±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 165.6±20.4 °C |
| Exact Mass | 127.009186 |
| PSA | 64.26000 |
| LogP | -0.90 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.614 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-Pyridinethiol 1-oxide?
The CAS number of 2-Pyridinethiol 1-oxide is 1121-31-9.
What are the molecular formula and molecular weight of 2-Pyridinethiol 1-oxide?
2-Pyridinethiol 1-oxide has molecular formula C5H5NOS and molecular weight 127.164 g/mol.
Is 2-Pyridinethiol 1-oxide hazardous?
2-Pyridinethiol 1-oxide has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2-Pyridinethiol 1-oxide?
For 2-Pyridinethiol 1-oxide, Upstream Products: 2-Chloropyridine N-oxide, 1-Propanol, 2-Chloropyridine N-oxide hydrochloride; Downstream Products: 2,2'-Dithiobis(pyridine-N-oxide), 1-oxa-2-oxo-3-thiaindolizinium chloride, 2-Mercaptopyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Pyridinethiol 1-oxide (CAS 1121-31-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48167-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.