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144302-38-5

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144302-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144302-38-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,0 and 2 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 144302-38:
(8*1)+(7*4)+(6*4)+(5*3)+(4*0)+(3*2)+(2*3)+(1*8)=95
95 % 10 = 5
So 144302-38-5 is a valid CAS Registry Number.

144302-38-5Relevant articles and documents

Chemoselective and stereoselective synthesis of gem-difluoro-β-aminoesters or gem-difluoro-β-lactams from ethylbromodifluoroacetate and imines during Reformatsky reaction

Boyer, Nicolas,Gloanec, Philippe,De Nanteuil, Guillaume,Jubault, Philippe,Quirion, Jean-Charles

, p. 12352 - 12366 (2008/03/12)

The chemoselective and stereoselective synthesis of gem-difluoro-β-aminoesters or gem-difluoro-β-lactams was investigated from ethylbromodifluoroacetate and imines during Reformatsky reaction. Influence of various reaction parameters, such as nature of the amine part, nature of the chiral auxiliary, was evaluated. High levels of stereoselectivity (up to 98%) were obtained for gem-difluoro-β-aminoesters and gem-difluoro-β-lactams using either (R)-phenylglycinol or (R)-methoxyphenylglycinol.

Enantioselective synthesis of diverse α-amino phosphonate diesters

Smith III, Amos B.,Yager, Kraig M.,Taylor, Carol M.

, p. 10879 - 10888 (2007/10/03)

An efficient, versatile protocol for the synthesis of highly enantioenriched α-amino phosphonate diesters has been devised. Addition of lithium diethyl phosphite to chiral chelating imines 31a-j, prepared from a variety of aldehydes and the chiral auxilia

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