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61-90-5

61-90-5 structure
61-90-5 structure
  • Name: L-leucine
  • Chemical Name: L-leucine
  • CAS Number: 61-90-5
  • Molecular Formula: C6H13NO2
  • Molecular Weight: 131.173
  • Catalog: Biochemical Common amino acids and protein drugs
  • Create Date: 2018-08-27 16:38:49
  • Modify Date: 2026-07-01 14:27:05
  • L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway[1].
Name L-leucine
Synonyms L-LEUCINE NATURAL
Glusate
L-A-AMINOISOCAPROIC ACID
L-2-aminoisobutylacetic acid
L-LEUCINE FCC
L-LEUCINE, PH EUR
L-LEUCINE extrapure CHR
(l)-leucine
L-LeucineForBiochemistry-(S)-2-Amino-4-MethylpentanoicAcid)
H-GLU-OH
[14C]-L-(+)-Leucine
GLU
Pentanoic acid, 2-amino-4-methyl
LEUCINE,(L-)(BULK
L-ISOLEUCYL-L-VALINE
GLUTACID
4-Methyl-L-norvaline
alpha-amino-gamma-methylvalericacid
l-Leu
Leucinum
[3H]-L-Glutamic acid
2-amino-4-methylpentanoicacid
L-Leucine
CH79091
L(-)-Leucin
4-methyl-norvalin
4-methyl-l-norvalin
L-Leu-OH
H-Leu-OH
L-Leucine-D10, 15N
L-α-Amino-isocapronsαure
(S)-2-amino-4-methyl-pentanoic acid
L-(+)-glutamic acid
(S)-(+)-Leucine
L-Leucine Vetec(TM) ade, >=
Leucin
Pentanoic acid, 2-amino-4-methyl-, (S)
L-(-)-2-Amino-4-methylpentanoic acid
(S)-2-Amino-4-methylpentanoic acid, Leucinum
L-LEUCINE //JP)
MFCD00002617
H-L-GLU-OH
alpha-Amino-gamma-methylvaleric acid
l-alpha-aminoisocaproicacid
L-Leucine, Leu, 100ppm
L-Norvaline, 4-methyl
L-Leucine-isopropyl-D7
Leucine
L-GLU
Valeric acid, 2-amino-4-methyl
EINECS 200-522-0
(s)-2-amino-4-methylvalericacid
L-Leucine (9CI)
L-Leucine, Animal-Free
[14C]-L-Glutamic acid
L-Leucine 24
L-Leucine-UL13C6
L-2-Amino-4-methylpentanoic acid
iso-C4H9CH(NH2)COOH
(2S)-α-Leucine
L-LEUCINE SOLUTION INSECT CELL CULTURE*T ESTED
α-amino-γ-methylvalericacid
L-Lecucine
Leucine (USP)
L-LeucineForBiochemistry
S-leucine
L-Leucine , Amino
2-amino-4-methyl-valericaci
QVYZ1Y1&1 &&L or S Form
Norvaline, 4-methyl
L-Leucine, Substantially free of isoleucine and methionine
pentanoicacid,2-amino-4-methyl-,(S)
L-LEUCINE (AMINO) SALT
2-Amino-4-methylpentanoic acid
L-LEUCINE, ADE, >= (HPL
Aciglut
L-LEUCINE SIGMAULTRA
L-Leucine, (Titration: anhydrous basis)
(S)-leucine
glutamic
LEUCINE
1-Leucine
Leucine, L- (8CI)
LEU
Glutaton
(2S)-2-amino-4-methyl-pentanoic acid
L-Leucine, ( EE/GLC)
Description L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway[1].
Related Catalog
Target

mTORC1

In Vitro L-Leucine (10 mM) treatment impairs endocrine progenitor cell development[1]. In E13.5 rat pancreatic explants, in absence of added L-Leucine, Ngn3 mRNA levels increased after 1 day of culture, peaked on day 3, and then decreased. When L-Leucine is added, a dramatic decrease is observed in Ngn3 mRNA levels. This decrease in Ngn3 mRNA levels was paralleled by a decrease in the number of Ngn3-expressing cells (4728±408 vs. 959±28; P<0.01). Finally, L-Leucine also caused a dose-dependent repressive effect on the mRNA levels of the three genes, namely Ngn3, its target Insm1, and insulin[1]. Leucine stimulates protein synthesis in skeletal muscle of neonatal pigs by enhancing mTORC1 activation. L-Leucine increases intracellular HIF-1α levels and activates the HIF-1α signaling pathway, and these two effects are mediated by the mTOR signaling pathway. This process results in Ngn3 repression and, consequently, decreases β-cell differentiation[1].
References

[1]. Rachdi L, et al. L-leucine alters pancreatic β-cell differentiation and function via the mTor signaling pathway. Diabetes. 2012 Feb;61(2):409-17.
Density 1.0±0.1 g/cm3
Boiling Point 225.8±23.0 °C at 760 mmHg
Melting Point 286-288 ºC
Molecular Formula C6H13NO2
Molecular Weight 131.173
Flash Point 90.3±22.6 °C
Exact Mass 131.094635
PSA 63.32000
LogP 0.73
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.463
Water Solubility 22.4 g/L (20 C)

CHEMICAL IDENTIFICATION

RTECS NUMBER :
OH2850000
CHEMICAL NAME :
Leucine, L-
CAS REGISTRY NUMBER :
61-90-5
LAST UPDATED :
199706
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
C6-H13-N-O2
MOLECULAR WEIGHT :
131.20
WISWESSER LINE NOTATION :
QVYZ1Y1&1 -L

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
5379 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
2620 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
138 gm/kg
SEX/DURATION :
female 5-15 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
90 mg/kg
SEX/DURATION :
female 1-6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Specific Developmental Abnormalities - other developmental abnormalities
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
90 mg/kg
SEX/DURATION :
female 1-6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - body wall
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
90 mg/kg
SEX/DURATION :
female 1-6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - craniofacial (including nose and tongue)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
60 mg/kg
SEX/DURATION :
female 6-9 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - Central Nervous System Reproductive - Specific Developmental Abnormalities - eye/ear Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
60 mg/kg
SEX/DURATION :
female 6-9 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - musculoskeletal system Reproductive - Specific Developmental Abnormalities - urogenital system

MUTATION DATA

TYPE OF TEST :
Sister chromatid exchange
TEST SYSTEM :
Human Lymphocyte
DOSE/DURATION :
10 mg/L
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 372,75,1996 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 5 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81818 No. of Facilities: 53 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 750 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81818 No. of Facilities: 1037 (estimated) No. of Industries: 4 No. of Occupations: 18 No. of Employees: 21979 (estimated) No. of Female Employees: 16153 (estimated)
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes Xi
Safety Phrases S24/25
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS OH2850000
HS Code 29224995
HS Code 2922499990
Summary HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%
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