12640-71-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12640-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,6,4 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 12640-71:
(7*1)+(6*2)+(5*6)+(4*4)+(3*0)+(2*7)+(1*1)=80
80 % 10 = 0
So 12640-71-0 is a valid CAS Registry Number.