The chemical compound "(1S,5R,6R,7R,15R)-7-(tetrahydro-2-pyranyloxy)-6-(E)-3-hydroxy-1-octenyl-2-oxabicyclo[3.3.0]octan-3-one" is a complex organic molecule with a unique structure. It features a bicyclic ring system with a three-carbon ring fused to a three-carbon ring, which is not fully saturated, indicated by the "2-oxa" prefix, suggesting the presence of an oxygen atom in the ring. The compound has several chiral centers, as indicated by the "1S,5R,6R,7R,15R" notation, which specifies the立体化学 configuration at each of these centers. It also contains a tetrahydro-2-pyranyloxy group at the 7-position, which is a type of protecting group often used in organic synthesis to mask hydroxyl groups. Additionally, there is a (E)-3-hydroxy-1-octenyl side chain attached at the 6-position, highlighting the presence of a double bond (E configuration) and a hydroxyl group. This molecule is likely to be found in the field of natural products or pharmaceuticals due to its intricate structure and functional groups, which can have significant biological activities.
The CAS Registry Mumber 75766-77-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,7,6 and 6 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 75766-77: (7*7)+(6*5)+(5*7)+(4*6)+(3*6)+(2*7)+(1*7)=177 177 % 10 = 7 So 75766-77-7 is a valid CAS Registry Number.