1609643-79-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609643-79-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,6,4 and 3 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1609643-79:
(9*1)+(8*6)+(7*0)+(6*9)+(5*6)+(4*4)+(3*3)+(2*7)+(1*9)=189
189 % 10 = 9
So 1609643-79-9 is a valid CAS Registry Number.