664340-58-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664340-58-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,4 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664340-58:
(8*6)+(7*6)+(6*4)+(5*3)+(4*4)+(3*0)+(2*5)+(1*8)=163
163 % 10 = 3
So 664340-58-3 is a valid CAS Registry Number.