666-75-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666-75-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 666-75:
(5*6)+(4*6)+(3*6)+(2*7)+(1*5)=91
91 % 10 = 1
So 666-75-1 is a valid CAS Registry Number.