1030340-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1030340-42-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,0,3,4 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1030340-42:
(9*1)+(8*0)+(7*3)+(6*0)+(5*3)+(4*4)+(3*0)+(2*4)+(1*2)=71
71 % 10 = 1
So 1030340-42-1 is a valid CAS Registry Number.