66441-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66441-49-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,4 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 66441-49:
(7*6)+(6*6)+(5*4)+(4*4)+(3*1)+(2*4)+(1*9)=134
134 % 10 = 4
So 66441-49-4 is a valid CAS Registry Number.