156161-97-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156161-97-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,1,6 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 156161-97:
(8*1)+(7*5)+(6*6)+(5*1)+(4*6)+(3*1)+(2*9)+(1*7)=136
136 % 10 = 6
So 156161-97-6 is a valid CAS Registry Number.