666211-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666211-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,2,1 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 666211-31:
(8*6)+(7*6)+(6*6)+(5*2)+(4*1)+(3*1)+(2*3)+(1*1)=150
150 % 10 = 0
So 666211-31-0 is a valid CAS Registry Number.