The chemical "2,3,3aβ,5,6,7,8,8a,9,9aβ-decahydro-5β,8aβ-dimethyl-2-oxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester" is a complex organic compound with a molecular formula of C15H16O4. It is a derivative of naphtho<2,3-b>furan, featuring a decalin ring system with two methyl groups at the 5β and 8aβ positions, and a carbonyl group at the 2 position. The compound is further characterized by the presence of a methyl ester group attached to the carboxylic acid at the 3 position. This molecule is likely to be found in the field of organic chemistry, potentially as an intermediate in the synthesis of pharmaceuticals or other complex organic molecules, given its structural complexity and functional groups.
The CAS Registry Mumber 2658-80-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,5 and 8 respectively; the second part has 2 digits, 8 and 0 respectively. Calculate Digit Verification of CAS Registry Number 2658-80: (6*2)+(5*6)+(4*5)+(3*8)+(2*8)+(1*0)=102 102 % 10 = 2 So 2658-80-2 is a valid CAS Registry Number.