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Details

Stereochemistry ABSOLUTE
Molecular Formula C6H13NO2.ClH
Molecular Weight 167.634
Optical Activity UNSPECIFIED
Defined Stereocenters 1 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of LEUCINE HYDROCHLORIDE

SMILES

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

InChI

InChIKey=XKZZNHPZEPVUQK-JEDNCBNOSA-N
InChI=1S/C6H13NO2.ClH/c1-4(2)3-5(7)6(8)9;/h4-5H,3,7H2,1-2H3,(H,8,9);1H/t5-;/m0./s1

HIDE SMILES / InChI

Molecular Formula ClH
Molecular Weight 36.461
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

Molecular Formula C6H13NO2
Molecular Weight 131.1729
Charge 0
Count
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 1 / 1
E/Z Centers 0
Optical Activity UNSPECIFIED

Leucine is an α-amino acid used in the biosynthesis of proteins. Leucine is an essential hydrophobic amino acid. It is used in the Leucine may be used some people as a supplement to build muscle. Leucine is also found in fish, meat, and poultry. In the pharmaceutical industry, L-leucine is used for parenteral and enteral nutrition and feeding, and is also used as a flavoring product and tablet lubricant in manufacturing. Leucine is an mTOR activator. It is a dietary amino acid with the capacity to directly stimulate muscle protein synthesis. As a dietary supplement, leucine has been found to slow the degradation of muscle tissue by increasing the synthesis of muscle proteins in aged rats. Long-term leucine supplementation does not increase muscle mass or strength in healthy elderly men. Leucine potently activates the mammalian target of rapamycin kinase that regulates cell growth. Infusion of leucine into the rat brain has been shown to decrease food intake and body weight via activation of the mTOR pathway.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
FREAMINE III 10%

Approved Use

Parenteral nutrition with 8.5% FreAmine® III (Amino Acid Injection) with Electrolytes is indicated to prevent nitrogen loss or treat negative nitrogen balance in adults and pediatric patients, where (1) the alimentary tract, by the oral, gastrostomy, or jejunostomy route, cannot or should not be used, or adequate protein intake is not feasible by these routes; (2) gastrointestinal absorption of protein is impaired; or (3) protein requirements are substantially increased as with extensive burns. Dosage, route of administration, and concomitant infusion of non-protein calories are dependent on various factors, such as nutritional metabolic status of the patient, anticipated duration of parenteral nutritional support, and vein tolerance

Launch Date

1971
Primary
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
15.9 μg/mL
100 mg/kg single, oral
dose: 100 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEUCINE plasma
Canis lupus
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
48.63 μg × h/mL
100 mg/kg single, oral
dose: 100 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEUCINE plasma
Canis lupus
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
1.49 h
100 mg/kg single, oral
dose: 100 mg/kg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEUCINE plasma
Canis lupus
population: HEALTHY
age: ADULT
sex: FEMALE / MALE
food status: FASTED
PubMed

PubMed

TitleDatePubMed
Prevalence of mutations causing retinitis pigmentosa and other inherited retinopathies.
2001
Expression pattern and gene characterization of asporin. a newly discovered member of the leucine-rich repeat protein family.
2001 Apr 13
The biosynthetic incorporation of the intact leucine skeleton into sterol by the trypanosomatid Leishmania mexicana.
2001 Apr 13
Stem cell factor presentation to c-Kit. Identification of a basolateral targeting domain.
2001 Apr 20
Different usage of the glycosaminoglycan attachment sites of biglycan.
2001 Apr 20
A rice functional transcriptional activator, RISBZ1, responsible for endosperm-specific expression of storage protein genes through GCN4 motif.
2001 Apr 27
Identification of a new Leu354Pro mutation responsible for factor XIII deficiency.
2001 Feb
Determination of binding constant of transcription factor AP-1 and DNA. Application of inhibitors.
2001 Feb
The Drosophila homolog of human AF10/AF17 leukemia fusion genes (Dalf) encodes a zinc finger/leucine zipper nuclear protein required in the nervous system for maintaining EVE expression and normal growth.
2001 Feb
Temperature dependence of the folding and unfolding kinetics of the GCN4 leucine zipper via 13C(alpha)-NMR.
2001 Feb
A compound heterozygous one amino-acid insertion/nonsense mutation in the plectin gene causes epidermolysis bullosa simplex with plectin deficiency.
2001 Feb
The digestion rate of protein is an independent regulating factor of postprandial protein retention.
2001 Feb
Amino acid interconversions in the fetal-placental unit: the animal model and human studies in vivo.
2001 Feb
Increased albumin and fibrinogen synthesis in hemodialysis patients with normal nutritional status.
2001 Feb
Differential insulin sensitivities of glucose, amino acid, and albumin metabolism in elderly men and women.
2001 Feb
Conserved transmembrane tyrosine residues of the TCR beta chain are required for TCR expression and function in primary T cells and hybridomas.
2001 Feb
A novel syndrome affecting multiple mitochondrial functions, located by microcell-mediated transfer to chromosome 2p14-2p13.
2001 Feb
Defective intracellular transport and processing of JAG1 missense mutations in Alagille syndrome.
2001 Feb 15
Tryptophan- and dileucine-based endocytosis signals in the neonatal Fc receptor.
2001 Feb 16
Multiple zonal projections of the basilar pontine nuclei to the cerebellar cortex of the rat.
2001 Feb 19
Identification of the main ubiquitination site in human erythroid alpha-spectrin.
2001 Feb 2
The metabolic evidence of synergistic effect between ohmefentanyl and [D-Pen2, D-Pen5] enkephalin on differentiated SH-SY5Y cells in humans.
2001 Feb 9
Identification and characterization of a novel gene that is upregulated in leukaemia cells by nitric oxide.
2001 Jan
Precursor supply for polyketide biosynthesis: the role of crotonyl-CoA reductase.
2001 Jan
Simvastatin inhibits noradrenaline-induced hypertrophy of cultured neonatal rat cardiomyocytes.
2001 Jan
Enhanced flavour formation by combination of selected lactococci from industrial and artisanal origin with focus on completion of a metabolic pathway.
2001 Jan
Net amino acid flux across the fetal liver and placenta during spontaneous ovine parturition.
2001 Jan
Proteoglycan synthesis is increased in cells with impaired clathrin-dependent endocytosis.
2001 Jan
Characterization of 3-[(123)I]iodo-L-alpha-methyl tyrosine transport in astrocytes of neonatal rats.
2001 Jan
Effect of elective abdominal surgery on human colon protein synthesis in situ.
2001 Jan
Intestinal apical amino acid absorption during development of the pig.
2001 Jan
Antianalgesic action of nociceptin originating in the brain is mediated by spinal prostaglandin E(2) in mice.
2001 Jan
Intestinal aminooligopeptidase in diabetic BioBreed rat: altered posttranslational processing and trafficking.
2001 Jan
Central neurocytomas express photoreceptor differentiation.
2001 Jan 1
Chloramine-T in radiolabeling techniques. IV. Penta-O-acetyl-N-chloro-N-methylglucamine as an oxidizing agent in radiolabelling techniques.
2001 Jan 1
Spontaneous dimerization and leucine-zipper induced activation of the recombinant catalytic domain of a new adenylyl cyclase of Trypanosoma brucei, GRESAG4.4B.
2001 Jan 15
The basal turnover of yeast branched-chain amino acid permease Bap2p requires its C-terminal tail.
2001 Jan 15
Secondary structure and post-translational modifications of the leucine-rich repeat protein PGIP (polygalacturonase-inhibiting protein) from Phaseolus vulgaris.
2001 Jan 16
Amino acid residues in ribonuclease MC1 from bitter gourd seeds which are essential for uridine specificity.
2001 Jan 16
Peptide models of the helical hydrophobic transmembrane segments of membrane proteins: interactions of acetyl-K2-(LA)12-K2-amide with phosphatidylethanolamine bilayer membranes.
2001 Jan 16
Strain is more important than electrostatic interaction in controlling the pKa of the catalytic group in aspartate aminotransferase.
2001 Jan 16
Substituting leucine for alanine-86 in the tether region of the iron-sulfur protein of the cytochrome bc1 complex affects the mobility of the [2Fe2S] domain.
2001 Jan 16
Overexpression of 12-lipoxygenase causes cardiac fibroblast cell growth.
2001 Jan 19
Hepatitis B virus X protein activates transcription by bypassing CREB phosphorylation, not by stabilizing bZIP-DNA complexes.
2001 Jan 23
MgATP-Bound and nucleotide-free structures of a nitrogenase protein complex between the Leu 127 Delta-Fe-protein and the MoFe-protein.
2001 Jan 23
The bZIP-like motif of hnRNP C directs the nuclear accumulation of pre-mRNA and lethality in yeast.
2001 Jan 26
Contryphans from Conus textile venom ducts.
2001 Jun
Cohesin-dockerin interaction in cellulosome assembly: a single hydroxyl group of a dockerin domain distinguishes between nonrecognition and high affinity recognition.
2001 Mar 30
Prostaglandin endoperoxide H synthase-1: the functions of cyclooxygenase active site residues in the binding, positioning, and oxygenation of arachidonic acid.
2001 Mar 30
Peptide leucine arginine, a potent immunomodulatory peptide isolated and structurally characterized from the skin of the Northern Leopard frog, Rana pipiens.
2001 Mar 30
Patents

Sample Use Guides

leucine 700 mg/m2/dose by mouth three times a day
Route of Administration: Oral
Primary cultures of peripheral blood mononuclear cells were rinsed with PBS and harvested in phosphate buffer pH 7.4 (50 mmol/L KH2PO4, 1 mmol/L EGTA, 150 mmol/L sucrose). The reaction was started by the addition of a lucigenin mixture 5 μmol/L) and NADPH (100 μmol/L) (Sigma-Aldrich) to the protein sample in a final volume of 250 μL. Branched-chain amino acids were prepared as a mixture of leucine, isoleucine and valine at 0.2–12 mmol/L Cells were exposed to increasing concentrations of BCAA (4–12 mmol/L) for 1 h Chemiluminescence was determined every 2.4 s for 3 min in a microtiter plate luminometer (Enspire Perkin Elmer). Basal activity in the absence of NADPH was subtracted from each reading and normalized to protein concentration.
Substance Class Chemical
Created
by admin
on Mon Mar 31 17:51:04 GMT 2025
Edited
by admin
on Mon Mar 31 17:51:04 GMT 2025
Record UNII
N39KV97633
Record Status Validated (UNII)
Record Version
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Name Type Language
LEUCINE HYDROCHLORIDE
Systematic Name English
(S)-2-AMINO-4-METHYLPENTANOIC ACID MONOHYDROCHLORIDE
Preferred Name English
Leucine hydrochloride [WHO-DD]
Common Name English
LEUCINE, L-, HYDROCHLORIDE
Systematic Name English
L-LEUCINE MONOHYDROCHLORIDE
Systematic Name English
LEUCINE HYDROCHLORIDE, (-)-
Systematic Name English
L-LEUCINE HYDROCHLORIDE
Systematic Name English
Code System Code Type Description
PUBCHEM
102479
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
FDA UNII
N39KV97633
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
DRUG BANK
DBSALT001773
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
ECHA (EC/EINECS)
212-083-2
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
EPA CompTox
DTXSID40226904
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
CAS
760-84-9
Created by admin on Mon Mar 31 17:51:05 GMT 2025 , Edited by admin on Mon Mar 31 17:51:05 GMT 2025
PRIMARY
Related Record Type Details
PARENT -> SALT/SOLVATE