1.01566
L-Asparagine monohydrate
for biochemistry
Synonym(s):
L-Asparagine monohydrate, Asparaginic acid semiamide, Asn
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About This Item
Empirical Formula (Hill Notation):
C4H8N2O3 · xH2O
CAS Number:
Molecular Weight:
132.12 (anhydrous basis)
UNSPSC Code:
12352209
EC Index Number:
200-735-9
NACRES:
NA.21
MDL number:
Quality Level
form
solid
pH
4.0-5.5 (20 °C, 20 g/L in H2O)
mp
215-217 °C (decomposes)
solubility
22 g/L
bulk density
530 kg/m3
storage temp.
2-30°C
SMILES string
[N+H3][C@@H](CC(=O)N)C(=O)[O-].O
InChI
1S/C4H8N2O3.H2O/c5-2(4(8)9)1-3(6)7;/h2H,1,5H2,(H2,6,7)(H,8,9);1H2/t2-;/m0./s1
InChI key
RBMGJIZCEWRQES-DKWTVANSSA-N
Application
- Chiral Resolution and Amino Acid Racemase Applications: L-Asparagine monohydrate has been utilized in the immobilization of amino acid racemases complemented with preferential crystallization process for enhanced chiral resolutions (Carneiro et al., 2020).
- Electro-optical Property Studies: L-Asparagine monohydrate can be used to prepare growth crystals to study its electro-optical properties, particularly in noncentrosymmetric crystal environments. (Shkir et al., 2015).
Analysis Note
- Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %
- Identity (IR-spectrum): passes test
- Identity (specific rotation): passes test
- Appearance: white to almost white crystalline powder or colorless crystals
- Appearance of solution (20 g/l, CO₂-free water): clear and colorless
- Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on dried substance): +33.7 to +36.0
- Chloride (Cl): ≤ 50 ppm
- Sulfate (SO₄): ≤ 50 ppm
- As (Arsenic): ≤ 5 ppm
- Ca (Calcium): ≤ 10 ppm
- Co (Cobalt): ≤ 5 ppm
- Fe (Iron): ≤ 5 ppm
- K (Potassium): ≤ 5 ppm
- Mg (Magnesium): ≤ 5 ppm
- Na (Sodium): ≤ 50 ppm
- Pb (Lead): ≤ 10 ppm
- Zn (Zinc): ≤ 5 ppm
- Ninhydrin-positive substances (LC)(Aspartic acid): ≤ 0.5 %
- Ninhydrin-positive substances (LC)(any other ninhydrin-positive impurity): ≤ 0.3 %
- Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 %
- Ninhydrin-positive substances (LC)(total impurities): ≤ 0.8 %
- Loss on drying (130 °C, 3 h): 10.5 - 12.5 %
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1015660100 | 04022536022833 |
| 1015669010 | 04022536692647 |
| 1015661000 | 04022536022840 |