66555-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66555-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,5,5 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66555-71:
(7*6)+(6*6)+(5*5)+(4*5)+(3*5)+(2*7)+(1*1)=153
153 % 10 = 3
So 66555-71-3 is a valid CAS Registry Number.