L-Aspartic acid

product name

L-Aspartic acid, BioUltra, ≥99.5% (T)

product line

BioUltra

Quality Level

200

Assay

≥99.5% (T)

form

powder or crystals

optical activity

[α]20/D +24.7±1°, c = 5% in 5 M HCl

impurities

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

ign. residue

≤0.05% (as SO₄)

loss

≤0.1% loss on drying, 110 °C

color

white

mp

>300 °C (dec.) (lit.)

solubility

1 M HCl: 0.5 M at 20 °C, clear, colorless

anion traces

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

cation traces

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

λ

0.5 M in 1 M HCl

UV absorption

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

SMILES string

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

InChI

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

InChI key

CKLJMWTZIZZHCS-REOHCLBHSA-N

Gene Information

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