128253-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128253-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,5 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128253-42:
(8*1)+(7*2)+(6*8)+(5*2)+(4*5)+(3*3)+(2*4)+(1*2)=119
119 % 10 = 9
So 128253-42-9 is a valid CAS Registry Number.