6664-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6664-97-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,6 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6664-97:
(6*6)+(5*6)+(4*6)+(3*4)+(2*9)+(1*7)=127
127 % 10 = 7
So 6664-97-7 is a valid CAS Registry Number.