5-Cholesten-24(RS)-methyl-d3-3β-ol

5-Cholesten-24(RS)-methyl-d3-3?-ol, also known as cholesterol-d3, is a deuterated form of cholesterol. Cholesterol is a waxy, fat-like substance that is found in the cells of the body and is essential for proper cell function. Cholesterol-d3 is used in research and analytical applications, specifically in the field of lipid metabolism. Chemically, cholesterol-d3 is a sterol molecule with a molecular weight of 386.7 g/mol. It is composed of a steroid nucleus with a hydroxyl group (-OH) at the 3-position and a methyl group (-CH3) at the 24-position. The deuterium atoms in the molecule are located at various positions, specifically at the 2,2',4,4',6,6',7,7',8,8',10,10',11,11',12,12',14,14',15,15',16,16',17,17',18,18',19,19',20,20',21,21',22,22',23,23',25,26, and 27 positions. In research, cholesterol-d3 is used as an internal standard for the quantification of cholesterol levels in various biological samples, such as blood, plasma, and tissues. It is also used in the study of cholesterol metabolism, including its biosynthesis, transport, and degradation pathways. Additionally, cholesterol-d3 can be used to study the effects of various compounds on cholesterol metabolism, such as drugs and dietary supplements. Overall, cholesterol-d3 is a valuable tool in the study of lipid metabolism and cholesterol-related diseases, and its use in research will undoubtedly lead to a better understanding of these complex processes.