1998-70-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1998-70-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,9 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1998-70:
(6*1)+(5*9)+(4*9)+(3*8)+(2*7)+(1*0)=125
125 % 10 = 5
So 1998-70-5 is a valid CAS Registry Number.