667889-51-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667889-51-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,8 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 667889-51:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*9)+(2*5)+(1*1)=242
242 % 10 = 2
So 667889-51-2 is a valid CAS Registry Number.