D-Asparagine Monohydrate CAS:5794-24-1 98.5%～101.0%
|
Solubility in water |
Colorless & clear (c=2) |
|
Specific rotation (20 °C) |
-33.5°～-36.5°(c= 10, 6M-HCl) |
|
Loss on drying |
11.5%～12.5% |
|
Residue on ignition (as sulfate) |
Not more than 0.1% |
|
Chloride (Cl) |
Not more than 0.03% |
|
Sulfate (SO4) |
Not more than 0.03% |
|
Heavy metals (as Pb) |
Not more than 10ppm |
|
Iron (Fe) |
Not more than 10ppm |
|
Ammonium (NH4) |
Not more than 0.02% |
|
Arsenic (As2O3) |
Not more than 1ppm |
|
Other amino acid (D-Asp) |
Not more than 1.0% by T.L.C
(The spotted amount, 20 mg) |
|
Assay (as anhydrous) |
98.5%～101.0% |
|
L-Isomer |
Not more than 0.5% |
D-(-)-Asparagine monohydrate is an important raw material and intermediate used in organic synthesis, pharmaceuticals agrochemicals and dyestuff fields.
Asparagine (symbol Asn or N[2]), is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH+
3 form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a side chain carboxamide, classifying it as a polar (at physiological pH), aliphatic amino acid. It is non-essential in humans, meaning the body can synthesize it. It is encoded by the codons AAU and AAC.
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