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1.01566

L-Asparagine monohydrate

Name: L-Asparagine monohydrate
Brand: MM

for biochemistry

Sinónimos:

L-Asparagine monohydrate, Asparaginic acid semiamide, Asn

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Fórmula empírica (notación de Hill):

C₄H₈N₂O₃ · xH₂O

Número CAS:

5794-13-8

Peso molecular:

132.12 (anhydrous basis)

UNSPSC Code:

12352209

EC Index Number:

200-735-9

NACRES:

NA.21

MDL number:

MFCD00151038

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Propiedades

Quality Segment

100

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

Descripción

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 %

Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c