13189-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13189-74-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,8 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 13189-74:
(7*1)+(6*3)+(5*1)+(4*8)+(3*9)+(2*7)+(1*4)=107
107 % 10 = 7
So 13189-74-7 is a valid CAS Registry Number.