CAS NO.: 78317-76-7; 2-Phenyl-1,2,3,4-tetrahydroisoquinoline hydrochloride. PROPERTIES: 2-Phenyl-1,2,3,4-tetrahydroisoquinoline hydrochloride is a crystalline solid. As a hydrochloride salt, it exhibits good solubility in polar solvents like water and methanol. It has a relatively stable structure under normal storage conditions but should be stored in a dry place to prevent moisture absorption, which could affect its quality. When handling, precautions should be taken to avoid contact with skin and eyes, as it may cause irritation. APPLICATIONS: This compound serves as an important intermediate in organic synthesis. It can participate in various chemical reactions, such as substitution reactions, to introduce different functional groups and build more complex organic molecules. In the pharmaceutical industry, it may be used as a starting material or intermediate for the synthesis of drugs with isoquinoline-based structures, which are often associated with diverse biological activities. Its role in synthetic chemistry is based on the reactivity of its functional groups and the requirements of drug synthesis, as described in organic chemistry textbooks and pharmaceutical research literature.