The CAS Registry Mumber 791521-96-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,9,1,5,2 and 1 respectively; the second part has 2 digits, 9 and 6 respectively. Calculate Digit Verification of CAS Registry Number 791521-96: (8*7)+(7*9)+(6*1)+(5*5)+(4*2)+(3*1)+(2*9)+(1*6)=185 185 % 10 = 5 So 791521-96-5 is a valid CAS Registry Number.
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(Y0000067) Flupentixol impurity D European Pharmacopoeia (EP) Reference Standard