66172-56-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66172-56-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,1,7 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66172-56:
(7*6)+(6*6)+(5*1)+(4*7)+(3*2)+(2*5)+(1*6)=133
133 % 10 = 3
So 66172-56-3 is a valid CAS Registry Number.