7,7-Dichlor-2,3,4,5-tetramethyl-bicyclo[4,2,0]octa-1,3,5-trien, also known as 7,7-dichlorooctachlorotriphenylene, is a synthetic organic compound with the molecular formula C16H14Cl2. It is a derivative of triphenylene, a polycyclic aromatic hydrocarbon, and features two chlorine atoms at the 7,7-positions and four methyl groups at the 2,3,4,5-positions. 7,7-Dichlor-2,3,4,5-tetramethyl-bicyclo<4,2,0>octa-1,3,5-trien is characterized by its rigid, planar structure and has been studied for its potential applications in various fields, including materials science and pharmaceuticals. However, due to its complex structure and potential environmental and health concerns associated with chlorinated compounds, it is not widely used in commercial applications.
The CAS Registry Mumber 6663-26-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 3 respectively; the second part has 2 digits, 2 and 6 respectively. Calculate Digit Verification of CAS Registry Number 6663-26: (6*6)+(5*6)+(4*6)+(3*3)+(2*2)+(1*6)=109 109 % 10 = 9 So 6663-26-9 is a valid CAS Registry Number.