1616556-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1616556-56-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,5,5 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1616556-56:
(9*1)+(8*6)+(7*1)+(6*6)+(5*5)+(4*5)+(3*6)+(2*5)+(1*6)=179
179 % 10 = 9
So 1616556-56-9 is a valid CAS Registry Number.