22839-87-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22839-87-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,8,3 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 22839-87:
(7*2)+(6*2)+(5*8)+(4*3)+(3*9)+(2*8)+(1*7)=128
128 % 10 = 8
So 22839-87-8 is a valid CAS Registry Number.