L-Isoleucine

SIGMA/58879 - BioUltra, ≥99.5% (NT)

Synonym: (2S,3S)-2-Amino-3-methylpentanoic acid

CAS Number: 73-32-5
Empirical Formula (Hill Notation): C₆H₁₃NO₂
Molecular Weight: 131.17
EC Number: 200-798-2
MDL Number: MFCD00064222
Linear Formula: C₂H₅CH(CH₃)CH(NH₂)CO₂H
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-58879-10G	10 g	$71.70 1/EA	Add To Favorites
45-58879-50G	50 g	$276.00 1/EA	Add To Favorites
45-58879-250G	250 g	$734.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

λ	1 M in 1 M HCl
anion traces	chloride (Cl^-): ≤100 mg/kg
	sulfate (SO₄^2-): ≤100 mg/kg
assay	≥99.5% (NT)
	≥99.5% (TLC)
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
	Na: ≤50 mg/kg
	NH₄⁺: ≤100 mg/kg
	Ni: ≤5 mg/kg
	Pb: ≤5 mg/kg
	Sr: ≤5 mg/kg
	Zn: ≤5 mg/kg
color	white
form	powder or crystals
ign. residue	0.05%
impurities	insoluble matter, passes filter test
	≤0.5% foreign amino acids
InChI	1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1
InChI key	AGPKZVBTJJNPAG-WHFBIAKZSA-N
loss	0.05% loss on drying, 20 °C (HV)
mp	288 °C (dec.) (lit.)
optical activity	[α]20/D +41.0±1°, c = 5% in 6 M HCl
product line	BioUltra
Quality Level	100
SMILES string	CC[C@H](C)[C@H](N)C(O)=O
solubility	1 M HCl: 1 M at 20 °C, clear, colorless
UV absorption	λ: 260 nm A_max: 0.07
	λ: 280 nm A_max: 0.05

Application:

Enhanced protein-metabolite correlation analysis: To investigate the association between Staphylococcus aureus mastitis and metabolic immune pathways.: This article discusses the metabolic pathways associated with bacterial infections in livestock, potentially useful for chemists studying metabolic pathways and their linkage to immune responses (Chen et al., 2024 ).

Probing pharmaceutically important amino acids L-isoleucine and L-tyrosine Solubilities: Unraveling the solvation thermodynamics in diverse mixed solvent systems.: This study explores the solubility and solvation thermodynamics of l-isoleucine, providing critical data for chemists working with pharmaceutical formulations and solubility studies (Chakraborty et al., 2024 ).

Other Notes:

Growth requirement of various microorganisms

RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥99.5% (NT); ≥99.5% (TLC)
mp	288 °C (dec.) (lit.)
UNSPSC	12352209

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