13897-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13897-49-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,9 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 13897-49:
(7*1)+(6*3)+(5*8)+(4*9)+(3*7)+(2*4)+(1*9)=139
139 % 10 = 9
So 13897-49-9 is a valid CAS Registry Number.