666728-79-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666728-79-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,7,2 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 666728-79:
(8*6)+(7*6)+(6*6)+(5*7)+(4*2)+(3*8)+(2*7)+(1*9)=216
216 % 10 = 6
So 666728-79-6 is a valid CAS Registry Number.