2-(Methylthio)pyrazine
2-甲硫基吡嗪
Also known as: 2-Methylsulfanylpyrazine, 2-Methylthiopyrazine, Methyl pyrazinyl sulfide, Pyrazinyl methyl sulfide, (Methylthio)pyrazine, FEMA 3231, MFCD00041024, EINECS 244-675-1
2-(Methylthio)pyrazine (CAS 21948-70-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H6N2S and a molecular weight of 126.179 g/mol. It is also known as 2-Methylsulfanylpyrazine, 2-Methylthiopyrazine and Methyl pyrazinyl sulfide. Key properties include a melting point of 44 °C, a boiling point of 221.2±20.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 87.6±21.8 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21948-70-9
- Jingsj CID
- J-1991116-8
- Molecular Formula
- C5H6N2S
- Chinese Name
- 2-甲硫基吡嗪
- Molecular Weight
- 126.179 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 44 °C |
|---|---|
| Boiling Point | 221.2±20.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 87.6±21.8 °C |
| Exact Mass | 126.025169 |
| PSA | 51.08000 |
| LogP | 1.26 |
| Vapor Pressure | 0.2±0.4 mmHg at 25°C |
| Refractive Index | 1.575 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-(Methylthio)pyrazine?
The CAS number of 2-(Methylthio)pyrazine is 21948-70-9.
What are the molecular formula and molecular weight of 2-(Methylthio)pyrazine?
2-(Methylthio)pyrazine has molecular formula C5H6N2S and molecular weight 126.179 g/mol.
Is 2-(Methylthio)pyrazine hazardous?
2-(Methylthio)pyrazine has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.
What are the upstream and downstream products of 2-(Methylthio)pyrazine?
For 2-(Methylthio)pyrazine, Upstream Products: 2-Chloropyrazine, Sodium thiomethoxide, iodomethane; Downstream Products: 2-Benzylpyrazine.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-(Methylthio)pyrazine (CAS 21948-70-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991116-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.