The CAS Registry Mumber 90028-68-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,2 and 8 respectively; the second part has 2 digits, 6 and 8 respectively. Calculate Digit Verification of CAS Registry Number 90028-68: (7*9)+(6*0)+(5*0)+(4*2)+(3*8)+(2*6)+(1*8)=115 115 % 10 = 5 So 90028-68-5 is a valid CAS Registry Number.
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(75264) OakmossExtractsolution 1 mg/mL in ethanol, analytical standard