23821-73-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23821-73-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,8,2 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23821-73:
(7*2)+(6*3)+(5*8)+(4*2)+(3*1)+(2*7)+(1*3)=100
100 % 10 = 0
So 23821-73-0 is a valid CAS Registry Number.