42157-98-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42157-98-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,5 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 42157-98:
(7*4)+(6*2)+(5*1)+(4*5)+(3*7)+(2*9)+(1*8)=112
112 % 10 = 2
So 42157-98-2 is a valid CAS Registry Number.