66491-64-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66491-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 66491-64:
(7*6)+(6*6)+(5*4)+(4*9)+(3*1)+(2*6)+(1*4)=153
153 % 10 = 3
So 66491-64-3 is a valid CAS Registry Number.