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297773-48-9

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297773-48-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 297773-48-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,7,7,7 and 3 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 297773-48:
(8*2)+(7*9)+(6*7)+(5*7)+(4*7)+(3*3)+(2*4)+(1*8)=209
209 % 10 = 9
So 297773-48-9 is a valid CAS Registry Number.

297773-48-9Relevant articles and documents

An expedient method for resolution of 3-amino-3-(3′-pyridyl)propionic acid and related compounds

Boesch, Heinz,Cesco-Cancian, Sergio,Hecker, Leonard R.,Hoekstra, William J.,Justus, Michael,Maryanoff, Cynthia A.,Scott, Lorraine,Shah, Rekha D.,Solms, Guenter,Sorgi, Kirk L.,Stefanick, Stephen M.,Thurnheer, Urs,Villani Jr., Frank J.,Walker, Donald G.

, p. 23 - 27 (2013/09/07)

Preparation of methyl (S)-3-amino-3-(3′-pyridyl)propionate dihydrochloride in high enantiomeric purity by selective crystallization of a diastereomeric salt of a carboxylic acid precursor (W-BOC-protected) with (1R,2S)-(-)-ephedrine is described. Further demonstration of the usefulness of this procedure to resolve other 3-amino-3-[(substituted)pyridyl]propionic acids is also described.

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