12640-39-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12640-39-0 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, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 12640-39:
(7*1)+(6*2)+(5*6)+(4*4)+(3*0)+(2*3)+(1*9)=80
80 % 10 = 0
So 12640-39-0 is a valid CAS Registry Number.