13907-81-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13907-81-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,0 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13907-81:
(7*1)+(6*3)+(5*9)+(4*0)+(3*7)+(2*8)+(1*1)=108
108 % 10 = 8
So 13907-81-8 is a valid CAS Registry Number.