L-(+)-Anhydrous Asparagine L-(+)-Asparagine

Structural formula

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

Numbering system

CAS number:70-47-3

MDL number:MFCD00064401

EINECS number:200-735-9

RTECS number:None

BRN number:1723527

PubChem number:24860328

Physical property data

1. Properties: white crystal. Odorless. Soluble in acid and alkali solutions, slightly soluble in water, almost insoluble in ethanol, ether, methanol and benzene.

2. Density (g/mL, 25/4℃): (d15/4) 1.404

3. Relative vapor density (g/mL, air=1): Not available Determined

4. Melting point (ºC): 234-235

5. Boiling point (ºC, normal pressure): Undetermined

6. Boiling point (ºC, normal pressure) 5.2kPa): Not determined

7. Refractive index: Not determined

8. Flash point (ºC): Not determined

9. Specific rotation ( º): [a] 20/D+20.0° (in 1mol/L hydrochloric acid), -9.3° (in 1mol/L sodium hydroxide).

10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa, 25ºC): Undetermined

12. Saturation Vapor pressure (kPa, 60ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) partition coefficient: Undetermined

17. Explosion upper limit (% , V/V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Soluble in acid and alkali solutions, slightly soluble In water, almost insoluble in ethanol, ether, methanol and benzene.

Toxicological data

None

Ecological data

None

Molecular structure data

1. Molar refractive index: 29.20

2. Molar volume (cm³/mol): 94.0

3. Isotonic specific volume (90.2K ): 273.6

4. Surface tension (dyne/cm): 71.6

5. Polarizability (10-24cm3): 11.57

Compute chemical data

1. Hydrophobic parameter calculation reference value (XlogP): -3.4

2. Number of hydrogen bond donors: 3

3. Number of hydrogen bond acceptors: 4

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4. Number of rotatable chemical bonds: 3

5. Number of tautomers: 2

6. Topological molecular polar surface area (TPSA): 106

7. Number of heavy atoms: 9

8. Surface charge: 0

9. Complexity: 134

10. Isotopic elementNumber of subunits: 0

11. Determine the number of atomic stereocenters: 1

12. Uncertain number of atomic stereocenters: 0

13. Determine chemical bonds Number of stereocenters: 0

14, Number of uncertain chemical bond stereocenters: 0

15, Number of covalent bond units: 1

Properties and stability

1. Exists in flue-cured tobacco leaves, burley tobacco leaves and smoke.

Storage method

Stored sealed and protected from light.

Synthesis method

1. Aspartic acid is produced by acetylation.

2. Extracted from natural products.

Purpose

1. Microbial culture. Peptide synthesis. Test aminotransferase substrate. Tuberculosis culture. Preparation of biological culture media.

2.For the treatment of female breast lobular hyperplasia and gynecomastia.

3. It is used in microbial culture, sewage treatment, and raw materials for polypeptide synthesis. It is one of the components that constitute protein.