161599-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161599-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,5,9 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161599-99:
(8*1)+(7*6)+(6*1)+(5*5)+(4*9)+(3*9)+(2*9)+(1*9)=171
171 % 10 = 1
So 161599-99-1 is a valid CAS Registry Number.