81686-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81686-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,8 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81686-18:
(7*8)+(6*1)+(5*6)+(4*8)+(3*6)+(2*1)+(1*8)=152
152 % 10 = 2
So 81686-18-2 is a valid CAS Registry Number.