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(2R)-azido-(3R)-phenylbutanoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128677-92-9

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128677-92-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128677-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,7 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 128677-92:
(8*1)+(7*2)+(6*8)+(5*6)+(4*7)+(3*7)+(2*9)+(1*2)=169
169 % 10 = 9
So 128677-92-9 is a valid CAS Registry Number.

128677-92-9Relevant academic research and scientific papers

A new strategy for the synthesis of four individual isomers of β-methylphenylalanine

Lung,Li,Lou,Hruby

, p. 57 - 61 (2007/10/02)

The application of an allylic strain effect in boron enolates and asymmetric Michael-like addition/electrophilic bromination reactions is reported for the asymmetric synthesis of the individual isomers of unusual constrained amino acids. For β-substituted

Exploration for Large-scale Stereoselective Synthesis of Unusual Amino Acids by using 4-Phenyoxazolidin-2-one as a New Chiral Resolution Reagent

Li, Guigen,Patel, Dinesh,Hruby, Victor J.

, p. 3057 - 3060 (2007/10/02)

Individual isomers of β-branched α-amino acids have been stereoselectively and asymmetrically synthesized in high yield by a new method which uses 4-phenyloxazolidin-2-one as a novel chiral resolution reagent acting simultaneously as the auxiliary.

Asymmetric synthesis of unusual amino acids: An efficient synthesis of optically pure isomers of β-methylphenylalanine

Dharanipragada,VanHulle,Bannister,Bear,Kennedy,Hruby

, p. 4733 - 4748 (2007/10/02)

Substitution of the diastereotopic β-hydrogens of many α-amino acids provides an approach to the three dimensional topographic control of peptide structure. Asymmetric synthesis of the desired amino acids is needed to facilitate these studies. All four in

ASYMMETRIC SYNTHESIS OF UNUSUAL AMINO ACIDS: SYNTHESIS OF OPTICALLY PURE ISOMERS OF β-METHYLPHENYLALANINE

Dharanipragada, Ramalinga,Nicolas, Ernesto,Toth, Geza,Hruby, Victor J.

, p. 6841 - 6844 (2007/10/02)

All the four individual isomers of β-methylphenylalanine have been synthesized in very high optical purities by utilizing in part the chiral imide enolate bromination methodology of Evans and co-workers.

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