The CAS Registry Mumber 58548-95-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,5,4 and 8 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 58548-95: (7*5)+(6*8)+(5*5)+(4*4)+(3*8)+(2*9)+(1*5)=171 171 % 10 = 1 So 58548-95-1 is a valid CAS Registry Number.
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