21844-92-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21844-92-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,4 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21844-92:
(7*2)+(6*1)+(5*8)+(4*4)+(3*4)+(2*9)+(1*2)=108
108 % 10 = 8
So 21844-92-8 is a valid CAS Registry Number.