667898-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667898-07-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,9 and 8 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 667898-07:
(8*6)+(7*6)+(6*7)+(5*8)+(4*9)+(3*8)+(2*0)+(1*7)=239
239 % 10 = 9
So 667898-07-9 is a valid CAS Registry Number.