1609549-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609549-18-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,5,4 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1609549-18:
(9*1)+(8*6)+(7*0)+(6*9)+(5*5)+(4*4)+(3*9)+(2*1)+(1*8)=189
189 % 10 = 9
So 1609549-18-9 is a valid CAS Registry Number.