1,2,3,4-Tetrahydro-4-isoquinolinol

Also known as: 1,2,3,4-Tetrahydroisoquinolin-4-ol, 1,2,3,4-Tetrahydro-isoquinoline-4-ol, 4-Hydroxy-1,2,3,4-tetrahydroisoquinoline, 1,2,3,4-Tetrahydro-isoquinolin-4-ol, 4-Isoquinolinol, 1,2,3,4-tetrahydro-, (±)-1,2,3,4-Tetrahydro-4-isoquinolinol

1,2,3,4-Tetrahydro-4-isoquinolinol (CAS 51641-23-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H11NO and a molecular weight of 149.19000 g/mol. Key properties include a boiling point of 295.692ºC at 760 mmHg, a density of 1.154g/cm3 and a flash point of 148.24ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51641-23-7
Jingsj CID: J-859744-2
Molecular Formula: C₉H₁₁NO
Molecular Weight: 149.19000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	295.692ºC at 760 mmHg
Density	1.154g/cm3
Flash Point	148.24ºC
Exact Mass	149.08400
PSA	32.26000
LogP	1.15200
Refractive Index	1.586

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 1,2,3,4-Tetrahydro-4-isoquinolinol?

The CAS number of 1,2,3,4-Tetrahydro-4-isoquinolinol is 51641-23-7.

What are the molecular formula and molecular weight of 1,2,3,4-Tetrahydro-4-isoquinolinol?

1,2,3,4-Tetrahydro-4-isoquinolinol has molecular formula C9H11NO and molecular weight 149.19000 g/mol.

What are the upstream and downstream products of 1,2,3,4-Tetrahydro-4-isoquinolinol?

For 1,2,3,4-Tetrahydro-4-isoquinolinol, Upstream Products: 4-Bromoisoquinoline, Isoquinolin-4-ol.

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. "1,2,3,4-Tetrahydro-4-isoquinolinol (CAS 51641-23-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-859744-2 (accessed 2026-11-09).

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