![Molecular structure of 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole (CAS 16502-01-5)](/images/chem_structures_svg/124/16502-01-5.svg)
2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole
Also known as: Tryptoline, Tetrahydro-β-carboline, 1,2,3,4-Tetrahydro-9H-pyrido[3,4-b]indole, THBC, Noreleagnine, Tetrahydronorharman, 2,3,4,9-Tetrahydro-1H-β-carboline
2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole (CAS 16502-01-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H12N2 and a molecular weight of 172.226 g/mol. Key properties include a melting point of 206-208 °C(lit.), a boiling point of 351.6±32.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 166.5±25.1 °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.
- 16502-01-5
- Jingsj CID
- J-24820-6
- Molecular Formula
- C11H12N2
- Molecular Weight
- 172.226 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 206-208 °C(lit.) |
|---|---|
| Boiling Point | 351.6±32.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 166.5±25.1 °C |
| Exact Mass | 172.100052 |
| PSA | 27.82000 |
| LogP | 1.33 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.670 |
| Storage Conditions | Refrigerator |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | serotonin:6.1 μM (Ki) |
|---|
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 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole?
The CAS number of 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole is 16502-01-5.
What are the molecular formula and molecular weight of 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole?
2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole has molecular formula C11H12N2 and molecular weight 172.226 g/mol.
Is 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole hazardous?
2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole 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 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole?
For 2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole, Upstream Products: tryptamine, Glyoxylic acid, Formaldehyde; Downstream Products: Rutaecarpine, Norharmane, 4,9-Dihydro-3H-pyrido[3,4-b]indole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,3,4,9-Tetrahydro-1H-pyrido[3,4-b]indole (CAS 16502-01-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24820-6 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.