1020540-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1020540-67-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,0,5,4 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1020540-67:
(9*1)+(8*0)+(7*2)+(6*0)+(5*5)+(4*4)+(3*0)+(2*6)+(1*7)=83
83 % 10 = 3
So 1020540-67-3 is a valid CAS Registry Number.