56417-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56417-89-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,4,1 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 56417-89:
(7*5)+(6*6)+(5*4)+(4*1)+(3*7)+(2*8)+(1*9)=141
141 % 10 = 1
So 56417-89-1 is a valid CAS Registry Number.