56917-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56917-91-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,9,1 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 56917-91:
(7*5)+(6*6)+(5*9)+(4*1)+(3*7)+(2*9)+(1*1)=160
160 % 10 = 0
So 56917-91-0 is a valid CAS Registry Number.