1620403-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620403-89-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,4,0 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1620403-89:
(9*1)+(8*6)+(7*2)+(6*0)+(5*4)+(4*0)+(3*3)+(2*8)+(1*9)=125
125 % 10 = 5
So 1620403-89-5 is a valid CAS Registry Number.