1619909-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1619909-83-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,9,9,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1619909-83:
(9*1)+(8*6)+(7*1)+(6*9)+(5*9)+(4*0)+(3*9)+(2*8)+(1*3)=209
209 % 10 = 9
So 1619909-83-9 is a valid CAS Registry Number.