Peter, A. et al. published their research in Chromatographia in 1998 | CAS: 151004-92-1

(S)-1,2,3,4-Tetrahydroisoquinoline-1-carboxylic acid (cas: 151004-92-1) belongs to tetrahydroisoquinoline derivatives. Tetrahydroisoquinoline motif is often present in natural products with a broad range of biological and pharmacological activities. Among them, 1-substituted tetrahydroisoquinolines are privileged scaffolds in drugs and pharmaceuticals. Tetrahydroisoquinoline derivatives may be formed in the body as metabolites of some drugs, and this was once thought to be involved in the development of alcoholism.This is no longer generally accepted by the scientific community.Reference of 151004-92-1

Enantiomeric separation of unusual secondary aromatic amino acids was written by Peter, A.;Torok, G.;Toth, G.;Van den Nest, W.;Laus, G.;Tourwe, D.;Armstrong, D. W.. And the article was included in Chromatographia in 1998.Reference of 151004-92-1 This article mentions the following:

High-performance liquid chromatog. and gas chromatog. methods were developed for the separation of unusual secondary aromatic amino acids. Amino acids containing 1,2,3,4-tetrahydroisoquinoline, 1,2,3,4-tetrahydronorharmane-1-carboxylic acid and 1,2,3,4-tetrahydro-3-carboxy-2-carboline moieties were synthesized in racemic or chiral forms. The high-performance liquid chromatog. was carried out either on a teicoplanin-containing chiral stationary phase or on an achiral C18 column. In the latter case the diastereomers of the amino acids formed by precolumn derivatization with the chiral reagents 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl isothiocyanate or 1-fluoro-2,4-dinitropheny1-5-L-alanine amide were separated The gas chromatog. analyses were based on separation on a Chirasil-L-Val column. In the experiment, the researchers used many compounds, for example, (S)-1,2,3,4-Tetrahydroisoquinoline-1-carboxylic acid (cas: 151004-92-1Reference of 151004-92-1).

(S)-1,2,3,4-Tetrahydroisoquinoline-1-carboxylic acid (cas: 151004-92-1) belongs to tetrahydroisoquinoline derivatives. Tetrahydroisoquinoline motif is often present in natural products with a broad range of biological and pharmacological activities. Among them, 1-substituted tetrahydroisoquinolines are privileged scaffolds in drugs and pharmaceuticals. Tetrahydroisoquinoline derivatives may be formed in the body as metabolites of some drugs, and this was once thought to be involved in the development of alcoholism.This is no longer generally accepted by the scientific community.Reference of 151004-92-1

Referemce:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem