873999-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873999-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,9,9 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 873999-89:
(8*8)+(7*7)+(6*3)+(5*9)+(4*9)+(3*9)+(2*8)+(1*9)=264
264 % 10 = 4
So 873999-89-4 is a valid CAS Registry Number.