13924-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13924-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,2 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13924-57:
(7*1)+(6*3)+(5*9)+(4*2)+(3*4)+(2*5)+(1*7)=107
107 % 10 = 7
So 13924-57-7 is a valid CAS Registry Number.