42540-65-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42540-65-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,4 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42540-65:
(7*4)+(6*2)+(5*5)+(4*4)+(3*0)+(2*6)+(1*5)=98
98 % 10 = 8
So 42540-65-8 is a valid CAS Registry Number.