66214-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66214-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,2,1 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 66214-57:
(7*6)+(6*6)+(5*2)+(4*1)+(3*4)+(2*5)+(1*7)=121
121 % 10 = 1
So 66214-57-1 is a valid CAS Registry Number.