(2,4-dioxo-2,3,4,5,6-pentaphenyl-3,4-dihydro-2H-2λ5,4λ5-[1,2,4]oxadiphosphinin-3-yl)-phenyl-methanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 66407-75-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,0 and 7 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 66407-75: (7*6)+(6*6)+(5*4)+(4*0)+(3*7)+(2*7)+(1*5)=138 138 % 10 = 8 So 66407-75-8 is a valid CAS Registry Number.