DL-Asparagine monohydrate

Synonym(s):(±)-2-Aminosuccinic acid 4-amide;DL-Aspartic acid 4-amide

CAS NO.：3130-87-8
Empirical Formula: C4H8N2O3
Molecular Weight: 132.12
MDL number: MFCD00064400
EINECS: 221-521-1
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-15 13:03:24

What is DL-Asparagine monohydrate?

Chemical properties

white fine crystalline powder, odorless; soluble in acid or alkali solution, slightly soluble in water, insoluble in ethanol, ether and other organic solvents.

The Uses of DL-Asparagine monohydrate

DL-asparagine is a racemic mixture of the non-essential amino acids, L and D-aparagine. It is generally used in growth-media for bacteria-growth. DL-Asparagine monohydrate can also be used to synthesize other salts such as DL-asparaginium perchlorate, DL-asparaginium nitrate and dimethyl DL-aspartate.

Definition

ChEBI: An alpha-amino acid in which one of the hydrogens attached to the alpha-carbon of glycine is substituted by a 2-amino-2-oxoethyl group.

Preparation

DL-Asparagine monohydrate was synthesized by dissolving maleic anhydride in 1,4-dioxane solution and refluxing with benzylamine after ammonolysis, followed by catalytic hydrogenation.

Properties of DL-Asparagine monohydrate

Melting point:	220 °C (dec.)(lit.)
Boiling point:	438.0±40.0 °C(Predicted)
Density	1.404±0.06 g/cm3(Predicted)
storage temp.	Room Temperature
solubility	Aqueous Acid (Slightly), Water (Slightly)
form	Fine Crystalline Powder
pka	2.17(at 20℃)
color	White
Water Solubility	soluble
BRN	6234992
CAS DataBase Reference	3130-87-8(CAS DataBase Reference)
EPA Substance Registry System	Asparagine (3130-87-8)