161990-08-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161990-08-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,9,9 and 0 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 161990-08:
(8*1)+(7*6)+(6*1)+(5*9)+(4*9)+(3*0)+(2*0)+(1*8)=145
145 % 10 = 5
So 161990-08-5 is a valid CAS Registry Number.