664999-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664999-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,9 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664999-58:
(8*6)+(7*6)+(6*4)+(5*9)+(4*9)+(3*9)+(2*5)+(1*8)=240
240 % 10 = 0
So 664999-58-0 is a valid CAS Registry Number.