L-天冬酰胺单

Description

L(+)-Asparagine monohydrate · CAS 5794-13-8 · C4H8N2O3. UNII 5Z33R5TKO7. Melting Point: 234-235 °C; Melting Point: 234 - 235 °C; Solubility: 29400.

Identification

CAS Registry Number	5794-13-8
PubChem CID	6267
Molecular formula	C4H8N2O3
IUPAC name	(2S)-2,4-diamino-4-oxobutanoic acid
UNII (FDA)	5Z33R5TKO7

Computed Descriptors

Molecular Weight	132.12
XLogP3	-3.4
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	3
Exact Mass	132.05349212
Monoisotopic Mass	132.05349212
Topological Polar Surface Area	106
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Melting Point	234-235 °C
Melting Point	234 - 235 °C
Solubility	29400
Solubility	In water, 2.94X10+4 mg/L at 25 °C
Solubility	29.4 mg/mL
Density	1.543 g/cu cm at 15/4 °C
Vapor Pressure	0.00000005 [mmHg]
LogP	-3.82
LogP	log Kow = -3.82
Ionization Efficiency	2.12

Physical description & handling notes

• Dry Powder
• Solid; [Merck Index] White hygroscopic powder; [Alfa Aesar MSDS]
• Solid
• Orthorhombic bisphenoidal crystals
• Practically insoluble in methanol, ethanol, ether, benzene. Soluble in acids and alkalies
• Specific optical rotation: -5.3 at 20 °C (c= 1.3 mg/L); +34.26 at 20 °C (c= 2.24 mg/L in 3.4N Hcl); -635 at 20 °C (c= 11.23 mg/L in 2.5N NaOH) /L-asparagine/

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT CIR / INCI: Cosmetic ingredients (Asparagine) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Antistatic
GHS notification summary	100% (164 / 164)

GHS Hazard Classification

GHS notification summary	100% (164 / 164)

Documented Uses

• Amino acid not essential for humans; [Merck Index] Used in biochemical research, to make culture media, in the synthesis of acrylamide, and in medicine; [HSDB] Used as a flavor enhancer, flavoring agent or adjuvant, and nutritional supplement; [FDA]
• Biochemical research, preparation of culture media, medicine
• Use (kg; approx.) in Germany (2009): >250
• Consumption (g per capita; approx.) in Germany (2009): 0.00305
• Used for nutritional supplementation, also for treating dietary shortage or imbalance.
• Produced by direct fermentation of carbohydrates

Synonyms

L-asparagine; asparagine; 70-47-3; Aspartamic acid; (S)-asparagine; agedoite; altheine; Asparamide; Crystal VI; asparagine acid; (-)-asparagine; (S)-2,4-diamino-4-oxobutanoic acid; L-Aspartamine; alpha-aminosuccinamic acid; L-Asparagine anhydrous; 2-Aminosuccinamic acid

Frequently Asked Questions

What are the CAS number and molecular formula of L(+)-Asparagine monohydrate?

CAS 5794-13-8; molecular formula C4H8N2O3; molecular weight — g/mol.

What other names is L(+)-Asparagine monohydrate known by?

L-asparagine, asparagine, 70-47-3, Aspartamic acid, (S)-asparagine, agedoite.

What is the regulatory status of L(+)-Asparagine monohydrate?

Documented regulatory listings: FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT; CIR / INCI: Cosmetic ingredients (Asparagine) -> CIR (Cosmetic Ingredient Review); CIR / INCI: Antistatic.

Is L(+)-Asparagine monohydrate classified as hazardous?

100% of GHS notifications report no hazard classification (164 of 164).

What are the key physical properties of L(+)-Asparagine monohydrate?

Melting Point: 234-235 °C; Melting Point: 234 - 235 °C; Solubility: 29400; Solubility: In water, 2.94X10+4 mg/L at 25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.