858491-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 858491-91-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,4,9 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 858491-91:
(8*8)+(7*5)+(6*8)+(5*4)+(4*9)+(3*1)+(2*9)+(1*1)=225
225 % 10 = 5
So 858491-91-5 is a valid CAS Registry Number.