1-Ethyl-1,2,3,4-tetrahydroisoquinoline

Also known as: 1-Ethyl-1,2,3,4-tetra-hydro-isoquinoline, Isoquinoline, 1-ethyl-1,2,3,4-tetrahydro-

1-Ethyl-1,2,3,4-tetrahydroisoquinoline (CAS 25939-81-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H15N and a molecular weight of 161.24300 g/mol. Key properties include a boiling point of 257.4ºC at 760 mmHg and a density of 0.949 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 25939-81-5
Jingsj CID: J-1146664-1
Molecular Formula: C₁₁H₁₅N
Molecular Weight: 161.24300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	257.4ºC at 760 mmHg
Density	0.949 g/cm3
Exact Mass	161.12000
PSA	12.03000
LogP	2.61220
Vapor Pressure	0.0146mmHg at 25°C
Refractive Index	1.513
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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-Ethyl-1,2,3,4-tetrahydroisoquinoline?

The CAS number of 1-Ethyl-1,2,3,4-tetrahydroisoquinoline is 25939-81-5.

What are the molecular formula and molecular weight of 1-Ethyl-1,2,3,4-tetrahydroisoquinoline?

1-Ethyl-1,2,3,4-tetrahydroisoquinoline has molecular formula C11H15N and molecular weight 161.24300 g/mol.

What are the upstream and downstream products of 1-Ethyl-1,2,3,4-tetrahydroisoquinoline?

For 1-Ethyl-1,2,3,4-tetrahydroisoquinoline, Upstream Products: Diethylzinc, 2-(3,5-Dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl carbonate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-Ethyl-1,2,3,4-tetrahydroisoquinoline (CAS 25939-81-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1146664-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.