930303-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 930303-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,0,3,0 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 930303-57:
(8*9)+(7*3)+(6*0)+(5*3)+(4*0)+(3*3)+(2*5)+(1*7)=134
134 % 10 = 4
So 930303-57-4 is a valid CAS Registry Number.