664975-90-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664975-90-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,7 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 664975-90:
(8*6)+(7*6)+(6*4)+(5*9)+(4*7)+(3*5)+(2*9)+(1*0)=220
220 % 10 = 0
So 664975-90-0 is a valid CAS Registry Number.