1021091-73-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021091-73-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,0,9 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1021091-73:
(9*1)+(8*0)+(7*2)+(6*1)+(5*0)+(4*9)+(3*1)+(2*7)+(1*3)=85
85 % 10 = 5
So 1021091-73-5 is a valid CAS Registry Number.