The chemical compound "(3R,5S,8S,9S,10S,11R,13S,14S,17S)-10,13-Dimethyl-17-(2-methyl-[1,3]dioxolan-2-yl)-hexadecahydro-cyclopenta[a]phenanthrene-3,11-diol" is a complex, chiral molecule with a unique structure. It features a cyclopenta[a]phenanthrene core, which is a type of polycyclic aromatic hydrocarbon. The molecule is characterized by its 17-(2-methyl-[1,3]dioxolan-2-yl) group, which is a substituted dioxolane ring, and two methyl groups at the 10 and 13 positions. The compound also has a 3,11-diol functional group, indicating the presence of two hydroxyl groups at these positions. The stereochemistry is specified by the R and S configurations at various carbon atoms, which are crucial for its three-dimensional structure and potential biological activity. (3R,5S,8S,9S,10S,11R,13S,14S,17S)-10,13-Dimethyl-17-(2-methyl-[1,3]dioxolan-2-yl)-hexadecahydro-cyclopenta[a]phenanthrene-3,11-diol is likely to be found in the field of organic chemistry, potentially with applications in pharmaceuticals or as a synthetic intermediate.
The CAS Registry Mumber 55637-51-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,3 and 7 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 55637-51: (7*5)+(6*5)+(5*6)+(4*3)+(3*7)+(2*5)+(1*1)=139 139 % 10 = 9 So 55637-51-9 is a valid CAS Registry Number.
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