The chemical compound "4a,6a,9a-trimethyl-7-(6-methylheptan-2-yl)-4,4a,4b,5,6,6a,7,8,9,9a,9b,10-dodecahydroindeno[5,4-f]chromen-2(3H)-one" is a complex organic molecule with a unique structure. It features a decahydroindeno[5,4-f]chromene core, which is a type of tricyclic compound with a fused ring system. The molecule is characterized by the presence of three methyl groups at positions 4a, 6a, and 9a, and a 6-methylheptan-2-yl substituent at position 7. 4a,6a,9a-trimethyl-7-(6-methylheptan-2-yl)-4,4a,4b,5,6,6a,7,8,9,9a,9b,10-dodecahydroindeno[5,4-f]chromen-2(3H)-one is a derivative of a larger class of organic compounds known as chromenes, which are often found in natural products and have various biological activities. The specific arrangement of atoms and functional groups in this molecule contributes to its unique chemical properties and potential applications in fields such as pharmaceuticals or materials science.
The CAS Registry Mumber 21857-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 21857-91: (7*2)+(6*1)+(5*8)+(4*5)+(3*7)+(2*9)+(1*1)=120 120 % 10 = 0 So 21857-91-0 is a valid CAS Registry Number.