The efficacy and quality of pharmaceutical products are intrinsically linked to the purity and properties of the chemical intermediates used in their synthesis. CAS 63038-27-7, also known as L-tert-Leucine methyl ester hydrochloride, is a prime example of such a critical intermediate. This compound plays a pivotal role in the pharmaceutical industry, particularly in the complex synthesis pathways of drugs like Atazanavir. Understanding its detailed chemical properties is therefore essential for optimizing manufacturing processes and ensuring the successful development of new therapeutics.

L-tert-Leucine methyl ester hydrochloride is characterized by its molecular formula C7H16ClNO2 and a molecular weight of approximately 181.66000. It is typically supplied as a white to off-white powder, signifying its refined nature. A key specification is its purity, which is consistently at or above 98%, a crucial factor for pharmaceutical applications where trace impurities can significantly affect the final product's safety and efficacy. The moisture content is also carefully controlled, kept at or below 0.5%, to ensure stability and consistent reactivity during synthesis.

The physical and chemical characteristics of CAS 63038-27-7, including its melting point of 183-186 °C and its solubility in certain organic solvents, are vital data points for chemists. These properties dictate how the compound behaves in various reaction conditions and purification steps. For instance, its stability under recommended storage conditions, typically -20°C Freezer, ensures that its chemical integrity is maintained, making it a reliable component in complex synthetic sequences.

The primary application of L-tert-Leucine methyl ester hydrochloride is as a key intermediate in the synthesis of Atazanavir sulfate and Atazanavir. This role positions it as a crucial component in the production of important antiretroviral drugs used in HIV treatment. The demand for such intermediates is robust, driven by the ongoing need for effective pharmaceutical solutions. The detailed exploration of the chemical properties of CAS 63038-27-7 allows manufacturers to fine-tune their synthetic processes, leading to higher yields and improved product quality.

In essence, CAS 63038-27-7 is a high-value chemical intermediate that significantly impacts the pharmaceutical manufacturing landscape. Its defined chemical properties, coupled with strict quality control measures, make it an indispensable building block for developing critical medications. For researchers and manufacturers engaged in drug synthesis, a thorough understanding of these properties is key to unlocking the full potential of this important compound.