161181-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161181-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,1,8 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 161181-74:
(8*1)+(7*6)+(6*1)+(5*1)+(4*8)+(3*1)+(2*7)+(1*4)=114
114 % 10 = 4
So 161181-74-4 is a valid CAS Registry Number.