654678-61-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 654678-61-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,4,6,7 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 654678-61:
(8*6)+(7*5)+(6*4)+(5*6)+(4*7)+(3*8)+(2*6)+(1*1)=202
202 % 10 = 2
So 654678-61-2 is a valid CAS Registry Number.