1,2,3,4-Tetrahydroisoquinoline (THIQ) is an endogenous and exogenous alkaloid with research interest in dopaminergic systems and neurodegenerative disease. The compound and its derivatives are studied as Parkinson disease research tools. Not stocked by Kodiac. This monograph is provided for research and educational reference.
Intrigue 0–100 blends mechanism novelty, evidence strength, and translational potential. Kodiac editorial, not peer-reviewed.
Endogenous and exogenous alkaloid
A simple isoquinoline scaffold present endogenously and as a structural element of many alkaloid pharmacophores; also studied for MAO modulation.
Abstract
1,2,3,4-Tetrahydroisoquinoline (THIQ; CAS 91-21-4; molecular formula C9H11N; molecular weight 133.19) is a simple isoquinoline alkaloid scaffold present endogenously in mammalian brain (formed by Pictet-Spengler condensation of phenethylamine and formaldehyde or related aldehydes) and as a structural component of many pharmacological alkaloids. Endogenous THIQs are implicated in some neurodegenerative processes (the 1-methyl-THIQ derivative is structurally similar to MPTP, the Parkinsonism-inducing toxin). The unsubstituted THIQ has been studied as a research probe for monoamine oxidase modulation and dopaminergic system effects. Not in clinical use.
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FOR RESEARCH USE ONLY. Not for medical, diagnostic, or therapeutic purposes. Not for human consumption. All information is provided for research and educational purposes only.