12731-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12731-64-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,7,3 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 12731-64:
(7*1)+(6*2)+(5*7)+(4*3)+(3*1)+(2*6)+(1*4)=85
85 % 10 = 5
So 12731-64-5 is a valid CAS Registry Number.