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(3S,4R,5S)-2-Methyl-3-phenyl-5-trifluoromethyl-5-trimethylsilanyloxy-isoxazolidine-4-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138536-07-9

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138536-07-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138536-07-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,3 and 6 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138536-07:
(8*1)+(7*3)+(6*8)+(5*5)+(4*3)+(3*6)+(2*0)+(1*7)=139
139 % 10 = 9
So 138536-07-9 is a valid CAS Registry Number.

138536-07-9Relevant academic research and scientific papers

1,3-Dipolar Cycloaddition Between Ethyl Trifluoroacetoacetate and N-(Benzylidene)methylamine N-Oxide

Begue, Jean-Pierre,Bonnet-Delpon, Daniele,Lequeux, Thierry

, p. 2888 - 2889 (1991)

The 1,3-dipolar cycloaddition between ethyl trifluoroacetoacetate and N-(benzylidene)methylamine N-oxide, performed in boiling toluene, leads regio- and stereo-selectively to an isoxazolidine, while the corresponding ethyl acetoacetate is found to be unreactive under the same conditions.On the other hand, α-trifluoromethylstyrene behaves as α-methylstyrene and affords two diastereoisomeric trifluoromethyl-substituted cycloadducts.

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