66646-75-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66646-75-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,4 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 66646-75:
(7*6)+(6*6)+(5*6)+(4*4)+(3*6)+(2*7)+(1*5)=161
161 % 10 = 1
So 66646-75-1 is a valid CAS Registry Number.