The CAS Registry Mumber 50894-43-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,8,9 and 4 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 50894-43: (7*5)+(6*0)+(5*8)+(4*9)+(3*4)+(2*4)+(1*3)=134 134 % 10 = 4 So 50894-43-4 is a valid CAS Registry Number.
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