42609-70-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42609-70-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,6,0 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42609-70:
(7*4)+(6*2)+(5*6)+(4*0)+(3*9)+(2*7)+(1*0)=111
111 % 10 = 1
So 42609-70-1 is a valid CAS Registry Number.