1,2,3,6-Tetrahydropyridine
Also known as: 1,2,5,6-Tetrahydropyridine, 3,6-Dihydro-2H-pyridine, 3-piperideine, delta3-Piperidine, NSC 65443, Pyridine, 1,2,3,6-tetrahydro-
1,2,3,6-Tetrahydropyridine (CAS 694-05-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H9N and a molecular weight of 83.132 g/mol. Key properties include a melting point of −48 °C(lit.), a boiling point of 110.9±9.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 16.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, 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.
- 694-05-3
- Jingsj CID
- J-24958-1
- Molecular Formula
- C5H9N
- Molecular Weight
- 83.132 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −48 °C(lit.) |
|---|---|
| Boiling Point | 110.9±9.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 16.1±0.0 °C |
| Exact Mass | 83.073502 |
| PSA | 12.03000 |
| LogP | 1.05 |
| Vapor Pressure | 23.3±0.2 mmHg at 25°C |
| Refractive Index | 1.455 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- 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 1,2,3,6-Tetrahydropyridine?
The CAS number of 1,2,3,6-Tetrahydropyridine is 694-05-3.
What are the molecular formula and molecular weight of 1,2,3,6-Tetrahydropyridine?
1,2,3,6-Tetrahydropyridine has molecular formula C5H9N and molecular weight 83.132 g/mol.
Is 1,2,3,6-Tetrahydropyridine hazardous?
1,2,3,6-Tetrahydropyridine has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1,2,3,6-Tetrahydropyridine?
For 1,2,3,6-Tetrahydropyridine, Upstream Products: 1-benzylpyridinium chloride, 1-Benzyl-1,2,3,6-tetrahydropyridine, 3-Aminopyridine; Downstream Products: 4-(4-Fluorophenyl)piperidine, 4-(3-Fluorophenyl)piperidine, 4-(2-Fluorophenyl)piperidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2,3,6-Tetrahydropyridine (CAS 694-05-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24958-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.