664985-25-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664985-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,8 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 664985-25:
(8*6)+(7*6)+(6*4)+(5*9)+(4*8)+(3*5)+(2*2)+(1*5)=215
215 % 10 = 5
So 664985-25-5 is a valid CAS Registry Number.