666853-55-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666853-55-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,8,5 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 666853-55:
(8*6)+(7*6)+(6*6)+(5*8)+(4*5)+(3*3)+(2*5)+(1*5)=210
210 % 10 = 0
So 666853-55-0 is a valid CAS Registry Number.