42556-50-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42556-50-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,5 and 6 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42556-50:
(7*4)+(6*2)+(5*5)+(4*5)+(3*6)+(2*5)+(1*0)=113
113 % 10 = 3
So 42556-50-3 is a valid CAS Registry Number.