1609489-97-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609489-97-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,4,8 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1609489-97:
(9*1)+(8*6)+(7*0)+(6*9)+(5*4)+(4*8)+(3*9)+(2*9)+(1*7)=215
215 % 10 = 5
So 1609489-97-5 is a valid CAS Registry Number.