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61819

Sigma-Aldrich

L-Leucine

BioUltra, ≥99.5% (NT)

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Synonym(s):
(S)-2-Amino-4-methylpentanoic acid
Linear Formula:
(CH3)2CHCH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
131.17
Beilstein:
1721722
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.26

product line

BioUltra

Quality Level

Assay

≥99.5% (NT)

form

powder or crystals

optical activity

[α]20/D +15.5±0.5°, c = 5% in 5 M HCl

technique(s)

NMR: suitable

impurities

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

ign. residue

≤0.1%

loss

≤0.1% loss on drying, 20 °C (HV)

color

white

mp

>300 °C (lit.)

solubility

1 M HCl: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤200 mg/kg
sulfate (SO42-): ≤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+: ≤100 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.1 M in 1 M HCl

UV absorption

λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05

SMILES string

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

InChI

1S/C6H13NO2/c1-4(2)3-5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1

InChI key

ROHFNLRQFUQHCH-YFKPBYRVSA-N

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This Item
L8912PHR1105L8000
L-Leucine BioUltra, ≥99.5% (NT)

Sigma-Aldrich

61819

L-Leucine

Premium Grade
L-Leucine from non-animal source, meets EP, JP, USP testing specifications, suitable for cell culture, 98.5-101.0%

Sigma-Aldrich

L8912

L-Leucine

-
L-Leucine Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1105

L-Leucine

-
L-Leucine reagent grade, ≥98% (HPLC)

Sigma-Aldrich

L8000

L-Leucine

Essential Grade
assay

≥99.5% (NT)

assay

98.5-101.0%

assay

-

assay

≥98% (HPLC)

form

powder or crystals

form

powder

form

-

form

powder

optical activity

[α]20/D +15.5±0.5°, c = 5% in 5 M HCl

optical activity

-

optical activity

-

optical activity

-

technique(s)

NMR: suitable

technique(s)

cell culture | mammalian: suitable

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

technique(s)

ligand binding assay: suitable

impurities

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

impurities

endotoxin, tested

impurities

-

impurities

isoleucine and methionine, essentially free

Other Notes

As spacer in isotachophoresis of serum proteins; Growth requirement of various microorganisms

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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L-Leucine Pharmaceutical Secondary Standard; Certified Reference Material

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