67817-15-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67817-15-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,8,1 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 67817-15:
(7*6)+(6*7)+(5*8)+(4*1)+(3*7)+(2*1)+(1*5)=156
156 % 10 = 6
So 67817-15-6 is a valid CAS Registry Number.