1020743-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1020743-40-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,0,7,4 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1020743-40:
(9*1)+(8*0)+(7*2)+(6*0)+(5*7)+(4*4)+(3*3)+(2*4)+(1*0)=91
91 % 10 = 1
So 1020743-40-1 is a valid CAS Registry Number.