The chemical compound "(3aR,4R,7aS)-7a-Methyl-1-((R)-1-methyl-2-(S)-oxiranyl-ethyl)-3a,4,5,6,7,7a-hexahydro-3H-inden-4-ol" is a complex organic molecule with a unique structure. It features a hexahydro-3H-inden-4-ol core, which is a type of tricyclic compound with a hydroxyl group at the 4-position. The molecule also includes a 7a-methyl group, indicating a methyl group attached to the 7a carbon atom. Additionally, it has a chiral center at the 1-position, where an (R)-1-methyl-2-(S)-oxiranyl-ethyl group is attached. The oxiranyl group, or epoxide, is a three-membered ring containing an oxygen atom, and the (S)-configuration at the 2-position indicates the specific arrangement of substituents around this chiral center. (3aR,4R,7aS)-7a-Methyl-1-((R)-1-methyl-2-(S)-oxiranyl-ethyl)-3a,4,5,6,7,7a-hexahydro-3H-inden-4-ol is characterized by its stereochemistry, with the 3aR, 4R, and 7aS configurations specifying the three-dimensional arrangement of atoms around the asymmetric carbon centers.
The CAS Registry Mumber 87640-67-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,4 and 0 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 87640-67: (7*8)+(6*7)+(5*6)+(4*4)+(3*0)+(2*6)+(1*7)=163 163 % 10 = 3 So 87640-67-3 is a valid CAS Registry Number.