42253-26-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42253-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,2,5 and 3 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 42253-26:
(7*4)+(6*2)+(5*2)+(4*5)+(3*3)+(2*2)+(1*6)=89
89 % 10 = 9
So 42253-26-9 is a valid CAS Registry Number.