3-Hydroxy-4-methoxyphenethylamine Hydrochloride, with CAS number 645-33-0, is a chemical compound that can also be referred to as 3-Hydroxy-4-methoxyphenethylamine HCl. It is a derivative of phenethylamine and is sometimes used as a pharmaceutical intermediate or in research applications. Here’s a description of this compound:

1. Chemical Structure: 3-Hydroxy-4-methoxyphenethylamine Hydrochloride has a molecular formula C8H12ClNO2 and is a salt form with a hydrochloride counterion. Its chemical structure includes a phenethylamine backbone with a hydroxyl (3-Hydroxy) and methoxy (4-methoxy) substituent on the phenyl ring.
2. Uses: This compound is used as a chemical intermediate in the synthesis of various organic compounds, including pharmaceuticals and research chemicals.
3. Biological Activity: Compounds related to phenethylamine can have activity in the central nervous system and may impact neurotransmitter systems. The specific biological activity of this compound may depend on the context in which it is used.
4. Research and Development: 3-Hydroxy-4-methoxyphenethylamine Hydrochloride is employed in chemical research and development, often for the synthesis of other organic compounds. It may have applications in medicinal chemistry and the development of new drugs.
5. Safety: As with any chemical compound, appropriate safety precautions and handling guidelines should be followed when working with 3-Hydroxy-4-methoxyphenethylamine Hydrochloride. This includes ensuring proper storage, handling, and disposal.

The specific applications and uses of this compound will depend on the goals of the research or synthesis in which it is employed. Researchers and chemists often utilize such compounds as intermediates to create a wide range of organic molecules for various purposes.