23030-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23030-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,3 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 23030-57:
(7*2)+(6*3)+(5*0)+(4*3)+(3*0)+(2*5)+(1*7)=61
61 % 10 = 1
So 23030-57-1 is a valid CAS Registry Number.