399513-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 399513-58-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,9,5,1 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 399513-58:
(8*3)+(7*9)+(6*9)+(5*5)+(4*1)+(3*3)+(2*5)+(1*8)=197
197 % 10 = 7
So 399513-58-7 is a valid CAS Registry Number.