The CAS Registry Mumber 388569-88-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,8,5,6 and 9 respectively; the second part has 2 digits, 8 and 8 respectively. Calculate Digit Verification of CAS Registry Number 388569-88: (8*3)+(7*8)+(6*8)+(5*5)+(4*6)+(3*9)+(2*8)+(1*8)=228 228 % 10 = 8 So 388569-88-8 is a valid CAS Registry Number.
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(01657) CesiumIonophoreIII Selectophore™, function tested