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129801-20-3

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129801-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129801-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,0 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129801-20:
(8*1)+(7*2)+(6*9)+(5*8)+(4*0)+(3*1)+(2*2)+(1*0)=123
123 % 10 = 3
So 129801-20-3 is a valid CAS Registry Number.

129801-20-3Relevant articles and documents

FLUORINE-CONTAINING AMINO ACIDS. V. IMINES OF TRIFLUOROPYRUVIC ACID IN THE SYNTHESIS OF N-SUBSTITUTED TRIFLUOROALANINES

Soloshonok, V. A.,Yagupol'skii, Yu. L.,Kukhar, V. P.

, p. 1478 - 1482 (2007/10/02)

N-Substituted trifluoroalanine methyl esters were obtained by the reduction of the corresponding imines of trifluoropyruvic acid with zinc in acetic acid.The N-butyl- and N-(1-phenylethyl)imines undergo a -proton shift under the influence of bases with the formation of trifluoroalanine derivatives.It was found that the N-(1-phenylethyl)imine of tetrafluoropyruvic acid is formed directly from the corresponding amine and methyl trifluoropyruvate under conditions with azeotropic distillation of the water with toluene in the presence of acidic catalysis.

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