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Tetrahydropapaverine hydrochloride

Also known as: 1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride, Norlaudanosine hydrochloride, Papaverine, 1,2,3,4-tetrahydro-, hydrochloride, Tetrahydropapaverine HCl, 1,2,3,4-Tetrahydro-6,7-dimethoxy-1-veratrylisoquinoline hydrochloride

Tetrahydropapaverine hydrochloride (CAS 6429-04-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H26ClNO4 and a molecular weight of 379.878 g/mol. Key properties include a melting point of 213-215ºC, a boiling point of 475.8ºC at 760 mmHg, a density of 1.12g/cm3 and a flash point of 202.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6429-04-5
Jingsj CID
J-1962248-1
Molecular Formula
C20H26ClNO4
Molecular Weight
379.878 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point213-215ºC
Boiling Point475.8ºC at 760 mmHg
Density1.12g/cm3
Flash Point202.7ºC
Exact Mass379.155029
PSA53.53000
LogP0.69750
Refractive Index1.549
Storage Conditions2-8°C

Activity & Biological Data

Additional Information[1]. Koshimura I, et al. Dimethoxyphenylethylamine and tetrahydropapaverine are toxic to the nigrostriatal system. Brain Res. 1997 Oct 31;773(1-2):108-16. [2]. Kim EI, et al. Inhibitory effects of tetrahydropapaverine on serotonin biosynthesis in murine mastocytoma P815 cells. Life Sci. 2004 Sep 3;75(16):1949-57.

Customs & Trade Information

HS Code2933499090
Summary2933499090. 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 Tetrahydropapaverine hydrochloride?

The CAS number of Tetrahydropapaverine hydrochloride is 6429-04-5.

What are the molecular formula and molecular weight of Tetrahydropapaverine hydrochloride?

Tetrahydropapaverine hydrochloride has molecular formula C20H26ClNO4 and molecular weight 379.878 g/mol.

What are the upstream and downstream products of Tetrahydropapaverine hydrochloride?

For Tetrahydropapaverine hydrochloride, Upstream Products: 3,4-Dihydropapaverine, (+/-)-Tetrahydropapaverine, (3,4-Dimethoxyphenyl)acetic acid; Downstream Products: Atracurium besylate, Atracurium dioxalate, (+/-)-Tetrahydropapaverine.

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

Last updated:

How to cite: Jingsj. "Tetrahydropapaverine hydrochloride (CAS 6429-04-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1962248-1 (accessed 2026-11-09).

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