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11230

Sigma-Aldrich

L-Aspartic acid potassium salt

puriss. p.a., ≥99.0% (anhydrous basis)

Synonym(s):

Potassium L-aspartate

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About This Item

Linear Formula:
HO2CCH2CH(NH2)CO2K
CAS Number:
Molecular Weight:
171.19
EC Number:
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77
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grade

puriss. p.a.

Quality Level

Assay

≥99.0% (T)
≥99.0% (anhydrous basis)

form

powder

optical activity

[α]20/D −13.5±1°, c = 1% in H2O

impurities

≤6% water

color

white

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 mg/kg
Mg: ≤100 mg/kg
Mn: ≤5 mg/kg
NH4+: ≤250 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

N[C@H](C([O-])=O)CC(O)=O.[K+]

InChI

1S/C4H7NO4.K/c5-2(4(8)9)1-3(6)7;/h2H,1,5H2,(H,6,7)(H,8,9);/q;+1/p-1/t2-;/m0./s1

InChI key

TXXVQZSTAVIHFD-DKWTVANSSA-M

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Biochem/physiol Actions

Aspartic acid is a non-essential amino acid. It is involved in the Urea cycle, Krebs cycle and in DNA metabolism.[1]
Principal neurotransmitter for fast synaptic excitation.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Proton transfer across biological membranes underpins central processes in biological systems, such as energy conservation and transport of ions and molecules. In the membrane proteins involved in these processes, proton transfer takes place through specific pathways connecting the two sides

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