161157-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161157-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,1,5 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161157-89:
(8*1)+(7*6)+(6*1)+(5*1)+(4*5)+(3*7)+(2*8)+(1*9)=127
127 % 10 = 7
So 161157-89-7 is a valid CAS Registry Number.