1609554-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609554-56-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,5,5 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1609554-56:
(9*1)+(8*6)+(7*0)+(6*9)+(5*5)+(4*5)+(3*4)+(2*5)+(1*6)=184
184 % 10 = 4
So 1609554-56-4 is a valid CAS Registry Number.