42501-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42501-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,0 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 42501-57:
(7*4)+(6*2)+(5*5)+(4*0)+(3*1)+(2*5)+(1*7)=85
85 % 10 = 5
So 42501-57-5 is a valid CAS Registry Number.