668998-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 668998-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,9,9 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 668998-52:
(8*6)+(7*6)+(6*8)+(5*9)+(4*9)+(3*8)+(2*5)+(1*2)=255
255 % 10 = 5
So 668998-52-5 is a valid CAS Registry Number.