138682-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138682-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,8 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138682-17:
(8*1)+(7*3)+(6*8)+(5*6)+(4*8)+(3*2)+(2*1)+(1*7)=154
154 % 10 = 4
So 138682-17-4 is a valid CAS Registry Number.