1609205-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1609205-97-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,2,0 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1609205-97:
(9*1)+(8*6)+(7*0)+(6*9)+(5*2)+(4*0)+(3*5)+(2*9)+(1*7)=161
161 % 10 = 1
So 1609205-97-1 is a valid CAS Registry Number.