158616-85-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158616-85-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,1 and 6 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 158616-85:
(8*1)+(7*5)+(6*8)+(5*6)+(4*1)+(3*6)+(2*8)+(1*5)=164
164 % 10 = 4
So 158616-85-4 is a valid CAS Registry Number.