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94619

Sigma-Aldrich

L-Valine

BioUltra, ≥99.5% (NT)

Synonym(s):
L-2-Amino-3-methylbutanoic acid, (S)-α-Aminoisovaleric acid
Linear Formula:
(CH3)2CHCH(NH2)CO2H
CAS Number:
Molecular Weight:
117.15
Beilstein:
1721136
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 +27.0±0.5°, c = 5% in 5 M HCl

impurities

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

ign. residue

≤0.05%

loss

≤0.05% loss on drying, 20 °C (HV)

color

white

mp

295-300 °C (subl.) (lit.)

solubility

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

anion traces

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

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 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+: ≤150 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 Amax: 0.15
λ: 280 nm Amax: 0.1

SMILES string

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

InChI

1S/C5H11NO2/c1-3(2)4(6)5(7)8/h3-4H,6H2,1-2H3,(H,7,8)/t4-/m0/s1

InChI key

KZSNJWFQEVHDMF-BYPYZUCNSA-N

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Related Categories

Other Notes

Protects enzymes against heat inactivation; As spacer in isotachophoresis of serum proteins; Growth requirement of various microorganisms

Storage Class Code

11 - Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

T. Yagi et al. et al.
Electrophoresis ?83, 503-503 (1984)
T. Hine
Electrophoresis ?83, 541-541 null
CRC Handbook of Microbiology, 4, 1-1 (1974)
L.G. Paleg et al.
Australian Journal of Plant Physiology, 8, 107-107 (1981)
Sonia Jego et al.
Nature neuroscience, 16(11), 1637-1643 (2013-09-24)
Rapid-eye movement (REM) sleep correlates with neuronal activity in the brainstem, basal forebrain and lateral hypothalamus. Lateral hypothalamus melanin-concentrating hormone (MCH)-expressing neurons are active during sleep, but their effects on REM sleep remain unclear. Using optogenetic tools in newly generated...

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