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L-Aspartic Acid
CAS No.: 56-84-8
Molecular Formula: C4H7NO4 Molecular Weight: 133.10
Molecular Structure:
Property:
The melting point of Aspartic Acid is 230℃ and the alpha is 25 º (c=8, 6N HCl). The water solubility of Aspartic Acid is 5 g/l (25 ℃).
Aspartic Acid (abbreviated as Asp or D; Asx or B represent either Aspartic Acid or Asparagine) is an α-amino acid with the chemical formula HO2CCH(NH2)CH2CO2H. The carboxylate anion of Aspartic Acid is known as aspartate. The L-isomer of aspartate is one of the 20 proteinogenic amino acids, i.e., the building blocks of proteins. Its codons are GAU and GAC.
Aspartic Acid is, together with Glutamic Acid, classified as an acidic amino acid with 4.0 pKa. Aspartate is pervasive in biosynthesis. As with all amino acids, the location of acid protons depends on the pH of the solution and the crystallization conditions.
Specifications：
| Item | Index |
| Content(%) | 98.5～101.0 |
| [a] Specific Rotation | ＋14.3°～＋15.2° |
| Transmittance % | ≥98.0 |
| Loss on Drying% | ≤0.20 |
| Residue on Ignition% | ≤0.1 |
| Other Amino Acids | None |
| Chloride[CIˉ] % | ≤0.02 |
| Sulfate[SO42-]% | ≤0.02 |
| Ammonium Salt [NH4+]% | ≤0.02 |
| Iron[Fe] ppm | ≤10 |
| Heavy Metals (Pb) ppm | ≤10 |
| Arsenic (As) ppm | ≤1 |
| PH | 2.5～3.5 |
Usage:
Aspartic Acid is also a metabolite in the urea cycle and participates in gluconeogenesis. Aspartic Acid carries reducing equivalents in the malate-aspartate shuttle, which utilizes the ready interconversion of aspartate and oxaloacetate, which is the oxidized (dehydrogenated) derivative of Malic Acid. Aspartic Acid donates one nitrogen atom in the biosynthesis of Inositol, the precursor to the purine bases.
Package and Storage:
Aspertic Acid is packed in 25kg fiber drum and stored in cool and air place.
Keyword:
L-Aspartic Acid; L-2-Aminobutanedioic Acid; L-Aminosuccinic Acid, Aspartate