L-Histidine

product line

BioUltra

Quality Level

200

Assay

≥99.5% (NT)

form

powder or crystals

optical activity

[α]20/D −39±1°, c = 2% in H₂O

impurities

insoluble matter, passes filter test
≤0.5% foreign amino acids

ign. residue

≤0.1% (as SO₄)

loss

≤0.5% loss on drying, 110 °C

color

white

pH

7.0-8.0 (25 °C, 0.1 M in H₂O)

mp

282 °C (dec.) (lit.)
~285 °C (dec.)

solubility

H₂O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤100 mg/kg
sulfate (SO₄^2-): ≤100 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⁺: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.1 M in H₂O

UV absorption

λ: 260 nm A_max: 0.05
λ: 280 nm A_max: 0.05

SMILES string

N[C@@H](Cc1c[nH]cn1)C(O)=O

application(s)

detection

InChI

1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m0/s1

InChI key

HNDVDQJCIGZPNO-YFKPBYRVSA-N

Gene Information

human ... CA1(759) , CA2(760)