DL-Asparagine

M.p. 234-235 C. Hydrolyses to aspartic acid. L-asparagine can be prepared from lupin seedlings, and DL-asparagine is synthesised from ammonia and maleic anhydride. L-asparagine is very widely distributed in plants, being found in all the Leguminosae and Gramineae, and in many other seeds, roots and buds. 

DL-Asparagine, systematic name, formula, and molecular weight,... 

The Cs atom of (I 0 is asymmetric. The D- and L-forms, as well as the racemate of (IV), have been prepared by heating L-, D- or DL-N -carbethoxy-asparagine, respectively, with ethanolic sodium ethoxide [74]. It was found that... 

Arsenic Specifications Policy, 2 Arsenic Test, 755 Ascorbic Acid, 33 l-Ascorbic Acid, 33 Ascorbyl Palmitate, 34 Ash (Acid-Insoluble), 748 Ash (Total), 748 L-Asparagine, 35 Aspartame, 35, (Sl)4 Aspartame-Acesulfame Salt, (S3)5, 96 dl-Aspartic Acid, 36, (S3)7 l-Aspartic Acid, 37, (S2)l, (S3)7 L-a-Aspartyl-2-methyl ester Compound with 6-Methyl-l,2,3-oxathiazin-4(3H)-one 2,2-Dioxide (1 1), (S3)5 A-L-a-Aspartyl-L-phenylalamnc 1-Methyl Ester, 35, (S1 )4... 

Histidine and asparagine function as tridentate chelates. In the asparagine complexes, the mixed (dl) form is the more stable while the reverse is true of the histidine complexes. Potentiometric studies of the complexes of various metals (Nill, Cull, Coll, Znll) with a wide range of amino adds all of which function as bidentate chelates have failed to reveal any differences in the stability of Mdl and Mll forms. (Ritsma et al. 1965 Gillard et al. 1966). The reason why the chirodiastaltic interactions should be so much more marked with tridentate than bidentate chelates calls for investigation in terms of the intramolecular force system. 

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