42253-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42253-92-9 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, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42253-92:
(7*4)+(6*2)+(5*2)+(4*5)+(3*3)+(2*9)+(1*2)=99
99 % 10 = 9
So 42253-92-9 is a valid CAS Registry Number.