Cas 79526-13-9,3-ethoxy-4,4,4-trifluoro-2-butenoic acid

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Check Digit Verification of cas no

The CAS Registry Mumber 79526-13-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,5,2 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 79526-13:
(7*7)+(6*9)+(5*5)+(4*2)+(3*6)+(2*1)+(1*3)=159
159 % 10 = 9
So 79526-13-9 is a valid CAS Registry Number.

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79526-13-9Relevant academic research and scientific papers

Reactions of polyfluoro-2-alkynoic acids with bifunctional hetero nucleophiles leading to polyfluoroalkylated heterocycles

Yamanaka, Hiroki,Tamura, Kazushige,Funabiki, Kazumasa,Fukunishi, Koushi,Ishihara, Takashi

, p. 177 - 190 (1992)

Polyfluoro-2-alkynoic acids, Rf-CC-COOH (Rf = HCF2, CF3, H(CF2)3), readily undergo tandem intermolecular-intramolecular Michael addition with bifunctional hetero nucleophiles, HX(CH2)nYH (X, Y = S, O; n = 2, 3), to give 2-polyfluoroalkylated 1,3-diheterocyclic compounds in good to excellent yields.

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