1616341-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1616341-77-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,3,4 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1616341-77:
(9*1)+(8*6)+(7*1)+(6*6)+(5*3)+(4*4)+(3*1)+(2*7)+(1*7)=155
155 % 10 = 5
So 1616341-77-5 is a valid CAS Registry Number.