Cycloeicosa-1,3,11,13-tetrayne is a cyclic polyyne compound consisting of 20 carbon atoms arranged in a ring structure, with four acetylenic triple bonds at positions 1, 3, 11, and 13. This molecule is characterized by its rigid and planar structure, which results from the sp-hybridization of the carbon atoms involved in the triple bonds. Cycloeicosa-1,3,11,13-tetrayne is of interest in organic chemistry and materials science due to its unique electronic properties and potential applications in the development of novel materials and devices. However, it is important to note that cycloeicosa-1,3,11,13-tetrayne is highly reactive and sensitive to environmental conditions, making it challenging to synthesize and handle in the laboratory.
The CAS Registry Mumber 6568-73-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,6 and 8 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 6568-73: (6*6)+(5*5)+(4*6)+(3*8)+(2*7)+(1*3)=126 126 % 10 = 6 So 6568-73-6 is a valid CAS Registry Number.