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144331-21-5

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144331-21-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 144331-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,3,3 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 144331-21:
(8*1)+(7*4)+(6*4)+(5*3)+(4*3)+(3*1)+(2*2)+(1*1)=95
95 % 10 = 5
So 144331-21-5 is a valid CAS Registry Number.

144331-21-5Relevant articles and documents

Stereospecific synthesis of (2S,4R)-[5,5,5-2H3]leucine

August, Ryan A.,Khan, Jeffrey A.,Moody, Claire M.,Young, Douglas W.

, p. 507 - 514 (1996)

The first stereospecific chemical synthesis of a sample of the amino acid (2S)-leucine labelled in one of the diastereotopic methyl groups has been achieved using (2S)-pyroglutamic acid as a chiral template. This has been used to develop a method for assigning resonances to the diastereotopic methyl groups of the leucine residues in the 1H NMR spectra of proteins.

L-Y-METHYLENEGLUTAMINE COMPOUNDS AND METHODS OF USE

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Paragraph 0088-0091, (2021/02/12)

Disclosed are substantially pure L-y-methyleneglutamine, L-y- methyleneglutamic acid, and/or amide derivatives, and methods of use thereof. In particular, the presently disclosed subject matter relates to L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives thereof, and methods of treating cancer. The method comprises administering one or more substantially pure L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives to a subject in need thereof.

Stereospecific Synthesis of (2S,4R)--Leucine

August, Ryan A.,Khan, Jeffrey A.,Moody, Claire M.,Young, Douglas W.

, p. 4617 - 4620 (2007/10/02)

The first fully stereospecific synthesis of a sample of the amino acid (2S)-leucine labelled in only one of the diastereotopic methyl groups has been achieved using (2S)-pyroglutamic acid as a chiral template. Key Words: leucine; stereospecific synthesis; amino acid; isotopic labelling; bio-organic

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