718639-13-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 718639-13-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,8,6,3 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 718639-13:
(8*7)+(7*1)+(6*8)+(5*6)+(4*3)+(3*9)+(2*1)+(1*3)=185
185 % 10 = 5
So 718639-13-5 is a valid CAS Registry Number.