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169542-84-1

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169542-84-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169542-84-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,5,4 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 169542-84:
(8*1)+(7*6)+(6*9)+(5*5)+(4*4)+(3*2)+(2*8)+(1*4)=171
171 % 10 = 1
So 169542-84-1 is a valid CAS Registry Number.

169542-84-1Relevant articles and documents

Synthesis and characterization of the first perfluoroaromatic polyimide of the AB-type

Vaganova, Tamara A.,Shundrina, Inna K.,Kusov, Soltan Z.,Karpova, Elena V.,Bagryanskaya, Irina Yu.,Malykhin, Evgenij V.

, p. 129 - 136 (2012)

Aminodefluorination of tetrafluorophthalic acid by anhydrous ammonia was shown to give 4-amino-3,5,6-trifluorophthalic acid selectively and in a high yield. Under the action of dicyclohexylcarbodiimide this acid was quantitatively converted into 4-amino-3

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