1020-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1020-47-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,0,2 and 0 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1020-47:
(6*1)+(5*0)+(4*2)+(3*0)+(2*4)+(1*7)=29
29 % 10 = 9
So 1020-47-9 is a valid CAS Registry Number.