L-天冬氨酸

HO₂CCH₂CH(NH₂)CO₂H

133.10

1723530

200-291-6

MFCD00002616

32160406

57646891

NA.26

Aspartic acid (Asp) is a non-essential amino acid. It makes up to 5% of the amino acids in a protein. The GAC and GAU codons encode Asp. This is a chiral molecule and occurs in two enantiomers namely L-Asp and D-Asp.

L-Aspartic acid has been used:

• as a metabolite to study the enzyme–metabolite interactions in the central metabolism of Escherichia coli by nuclear magnetic resonance (NMR)
• in transmission electron microscopy
• as a component of complete media for culturing Yeast strain

L-Aspartic acid is associated with protein biosynthesis (proteinogenic) and neurotransmission
快速突触兴奋的主要神经递质。

BioUltra

200

≥99.5% (T)

powder or crystals

[α]20/D +24.7±1°, c = 5% in 5 M HCl

insoluble matter, passes filter test
≤0.3% foreign amino acids

≤0.05% (as SO₄)

≤0.1% loss on drying, 110 ℃

white

>300 ℃ (dec.) (lit.)

1 M HCl: 0.5 M at 20 ℃, clear, colorless

chloride (Cl^-): ≤50 mg/kg
sulfate (SO₄^2-): ≤150 mg/kg

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
NH₄⁺: ≤200 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

0.5 M in 1 M HCl

λ: 260 nm A_max: 0.20
λ: 280 nm A_max: 0.10

N[C@@H](CC(O)=O)C(O)=O

1S/C4H7NO4/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H,6,7)(H,8,9)/t2-/m0/s1

CKLJMWTZIZZHCS-REOHCLBHSA-N

human ... CA1(759), CA2(760)
rat ... Grin2a(24409)

13 - Non Combustible Solids

WGK 1

dust mask type N95 (US), Eyeshields, Gloves