The chemical compound "(3aS)-3ξ,6c-dimethyl-(3ar,6ac)-hexahydro-cyclopenta[c]furan-1-one" is a complex organic molecule with a unique structure. It features a cyclopenta[c]furan ring system, which is a five-membered ring with a furan (a heterocyclic compound with an oxygen atom in the ring) fused to it. The compound is characterized by its hexahydro structure, indicating the presence of six hydrogen atoms attached to the ring in a saturated manner. The "3ξ,6c" and "3ar,6ac" notations suggest specific stereochemistry at the 3 and 6 positions, with "ξ" and "c" likely representing the axial and equatorial positions in the ring, respectively. The "S" and "R" designations at the 3a position indicate the stereochemistry, with "S" standing for the (3aS) configuration. The molecule also contains two methyl groups, which are attached at the 3 and 6 positions, contributing to its overall structure and properties. (3aS)-3ξ,6c-dimethyl-(3ar,6ac)-hexahydro-cyclopenta[c]furan-1-one is an example of the diversity and complexity found in organic chemistry, with potential applications in various fields such as pharmaceuticals, materials science, or as intermediates in chemical synthesis.
The CAS Registry Mumber 475-27-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,7 and 5 respectively; the second part has 2 digits, 2 and 7 respectively. Calculate Digit Verification of CAS Registry Number 475-27: (5*4)+(4*7)+(3*5)+(2*2)+(1*7)=74 74 % 10 = 4 So 475-27-4 is a valid CAS Registry Number.