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CAS Number：133982-66-8
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SMILES：IntroductionCAS 133982-66-8 is a chemical compound that is also known as 3,4-Dihydro-2H-pyrido[1,2-a]pyrazin-1-one. This compound is often used in the pharmaceutical industry as it has been found to have various biological activities. In this article, we will explore the properties of CAS 133982-66-8.Physical PropertiesCAS 133982-66-8 is a white to off-white crystalline powder with a molecular weight of 168.16 g/mol. It has a melting point of 225-228??C and a boiling point of 529.5??C at 760 mmHg. This compound is sparingly soluble in water but soluble in organic solvents such as ethanol, methanol, and acetone.Chemical PropertiesCAS 133982-66-8 has a molecular formula of C9H9N3O and a density of 1.41 g/cm?. It is a heterocyclic compound that contains a pyrazinone ring and a pyridine ring. This compound is stable under normal conditions but can decompose at high temperatures or in the presence of strong acids or bases.Biological ActivitiesCAS 133982-66-8 has been found to have various biological activities. It has been shown to have antitumor, anti-inflammatory, and analgesic properties. It has also been found to inhibit the activity of certain enzymes such as acetylcholinesterase and carbonic anhydrase. Additionally, CAS 133982-66-8 has been found to have anxiolytic and antidepressant effects.SynthesisCAS 133982-66-8 can be synthesized by reacting 3,4-dihydro-2H-pyrido[1,2-a]pyrazin-1-one with hydroxylamine hydrochloride in the presence of sodium carbonate. This reaction results in the formation of 3,4-dihydro-2H-pyrido[1,2-a]pyrazin-1-one oxime, which can then be converted to CAS 133982-66-8 by treatment with acetic anhydride.ApplicationsCAS 133982-66-8 is commonly used in the pharmaceutical industry for the development of new drugs. Its various biological activities make it a promising candidate for the treatment of various diseases such as cancer, inflammation, and depression. Additionally, its ability to inhibit certain enzymes makes it useful for the development of enzyme inhibitors.ConclusionCAS 133982-66-8 is a versatile compound that has various biological activities and is commonly used in the pharmaceutical industry. Its physical and chemical properties make it a stable and useful compound for the development of new drugs. Further research on this compound may lead to the discovery of new therapeutic agents for the treatment of various diseases.