The CAS Registry Mumber 56087-11-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,0,8 and 7 respectively; the second part has 2 digits, 1 and 1 respectively. Calculate Digit Verification of CAS Registry Number 56087-11: (7*5)+(6*6)+(5*0)+(4*8)+(3*7)+(2*1)+(1*1)=127 127 % 10 = 7 So 56087-11-7 is a valid CAS Registry Number.
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(Y0000744) Dextranomer European Pharmacopoeia (EP) Reference Standard