161665-89-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161665-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,6,6 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161665-89:
(8*1)+(7*6)+(6*1)+(5*6)+(4*6)+(3*5)+(2*8)+(1*9)=150
150 % 10 = 0
So 161665-89-0 is a valid CAS Registry Number.