3,7-dioxo-24-nor-5β-cholan-23-oic acid is a complex organic compound with the molecular formula C23H34O4. It is a derivative of the bile acid family, characterized by the presence of two oxygen atoms in the form of ketone groups at the 3rd and 7th carbon positions, and a carboxylic acid group at the 23rd carbon position. The "24-nor" prefix indicates that the molecule lacks a carbon atom at the 24th position, making it a nor-derivative. The "5β" designation refers to the stereochemistry at the 5th carbon, where the hydroxyl group is oriented in the β-configuration. 3,7-dioxo-24-nor-5β-cholan-23-oic acid is of interest in the study of bile acids, which play a crucial role in the digestion and absorption of fats and fat-soluble vitamins in the body.
The CAS Registry Mumber 7202-21-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,0 and 2 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 7202-21: (6*7)+(5*2)+(4*0)+(3*2)+(2*2)+(1*1)=63 63 % 10 = 3 So 7202-21-3 is a valid CAS Registry Number.