138689-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138689-11-9 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 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138689-11:
(8*1)+(7*3)+(6*8)+(5*6)+(4*8)+(3*9)+(2*1)+(1*1)=169
169 % 10 = 9
So 138689-11-9 is a valid CAS Registry Number.