42520-11-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42520-11-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,2 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 42520-11:
(7*4)+(6*2)+(5*5)+(4*2)+(3*0)+(2*1)+(1*1)=76
76 % 10 = 6
So 42520-11-6 is a valid CAS Registry Number.