The CAS Registry Mumber 148642-19-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,6,4 and 2 respectively; the second part has 2 digits, 1 and 9 respectively. Calculate Digit Verification of CAS Registry Number 148642-19: (8*1)+(7*4)+(6*8)+(5*6)+(4*4)+(3*2)+(2*1)+(1*9)=147 147 % 10 = 7 So 148642-19-7 is a valid CAS Registry Number.
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(14274) Acetonitrile with 0.1% ammonium acetate tested for UHPLC-MS