The CAS Registry Mumber 2888-44-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,8 and 8 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 2888-44: (6*2)+(5*8)+(4*8)+(3*8)+(2*4)+(1*4)=120 120 % 10 = 0 So 2888-44-0 is a valid CAS Registry Number.
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