664975-28-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664975-28-4 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, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664975-28:
(8*6)+(7*6)+(6*4)+(5*9)+(4*7)+(3*5)+(2*2)+(1*8)=214
214 % 10 = 4
So 664975-28-4 is a valid CAS Registry Number.