The CAS Registry Mumber 8031-44-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 8,0,3 and 1 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 8031-44: (6*8)+(5*0)+(4*3)+(3*1)+(2*4)+(1*4)=75 75 % 10 = 5 So 8031-44-5 is a valid CAS Registry Number.
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(H1426000) Hydrogenated wool fat European Pharmacopoeia (EP) Reference Standard