1391998-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1391998-52-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,1,9,9 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1391998-52:
(9*1)+(8*3)+(7*9)+(6*1)+(5*9)+(4*9)+(3*8)+(2*5)+(1*2)=219
219 % 10 = 9
So 1391998-52-9 is a valid CAS Registry Number.