17571-56-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17571-56-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,5,7 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17571-56:
(7*1)+(6*7)+(5*5)+(4*7)+(3*1)+(2*5)+(1*6)=121
121 % 10 = 1
So 17571-56-1 is a valid CAS Registry Number.