161754-71-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161754-71-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,7,5 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 161754-71:
(8*1)+(7*6)+(6*1)+(5*7)+(4*5)+(3*4)+(2*7)+(1*1)=138
138 % 10 = 8
So 161754-71-8 is a valid CAS Registry Number.