(3aR,4R,7S,7aR)-1-Oxo-1,4,7,7a-tetrahydro-4,7-ethano-indene-3a-carboxylic acid ethyl ester is a complex organic compound with the molecular formula C14H16O3. It is a derivative of indene, a bicyclic aromatic hydrocarbon, and features a carboxylic acid group at the 3a-position, which is esterified with an ethyl group. The compound's structure is characterized by a tetrahydro-4,7-ethano-indene core, with the ethano bridge connecting the 4 and 7 positions. The stereochemistry at the 3a, 4, 7, and 7a positions is crucial for its biological activity and potential applications, which may include pharmaceutical or chemical research. (3aR,4R,7S,7aR)-1-Oxo-1,4,7,7a-tetrahydro-4,7-ethano-indene-3a-carboxylic acid ethyl ester is a specific isomer due to its unique arrangement of atoms in space, which can significantly affect its properties and reactivity.
The CAS Registry Mumber 56689-10-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,6,8 and 9 respectively; the second part has 2 digits, 1 and 0 respectively. Calculate Digit Verification of CAS Registry Number 56689-10: (7*5)+(6*6)+(5*6)+(4*8)+(3*9)+(2*1)+(1*0)=162 162 % 10 = 2 So 56689-10-2 is a valid CAS Registry Number.