2,3-Diethyl-5-methylpyrazine
2,3-二乙基-5-甲基吡嗪
Also known as: 2,3-Diethyl-5-methylpyrazine, 2,3-Diethyl-6-methylpyrazine, 2-Methyl-5,6-diethylpyrazine, 5,6-Diethyl-2-methylpyrazine, 5-Methyl-2,3-diethylpyrazine, Pyrazine, 2,3-diethyl-5-methyl-, FEMA 3336, MFCD00009635, EINECS 242-024-6
2,3-Diethyl-5-methylpyrazine (CAS 18138-04-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H14N2 and a molecular weight of 150.221 g/mol. It is also known as 2,3-Diethyl-6-methylpyrazine, 2-Methyl-5,6-diethylpyrazine and 5,6-Diethyl-2-methylpyrazine. Key properties include a boiling point of 198.1±35.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 80.0±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18138-04-0
- Jingsj CID
- J-1504157-3
- Molecular Formula
- C9H14N2
- Chinese Name
- 2,3-二乙基-5-甲基吡嗪
- Molecular Weight
- 150.221 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 198.1±35.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 80.0±0.0 °C |
| Exact Mass | 150.115692 |
| PSA | 25.78000 |
| LogP | 2.16 |
| Vapor Pressure | 0.5±0.4 mmHg at 25°C |
| Refractive Index | 1.499 |
| Additional Property | SLIGHTLY SOLUBLE |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- 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 2,3-Diethyl-5-methylpyrazine?
The CAS number of 2,3-Diethyl-5-methylpyrazine is 18138-04-0.
What are the molecular formula and molecular weight of 2,3-Diethyl-5-methylpyrazine?
2,3-Diethyl-5-methylpyrazine has molecular formula C9H14N2 and molecular weight 150.221 g/mol.
Is 2,3-Diethyl-5-methylpyrazine hazardous?
2,3-Diethyl-5-methylpyrazine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2,3-Diethyl-5-methylpyrazine?
For 2,3-Diethyl-5-methylpyrazine, Upstream Products: L-Threonine, L-Ascorbic acid, L-Alanine.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3-Diethyl-5-methylpyrazine (CAS 18138-04-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504157-3 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.