81020-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81020-73-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,2 and 0 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81020-73:
(7*8)+(6*1)+(5*0)+(4*2)+(3*0)+(2*7)+(1*3)=87
87 % 10 = 7
So 81020-73-7 is a valid CAS Registry Number.