L-Leucine
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- $10 - $2980
- Product name: L-Leucine
- CAS: 61-90-5
- MF: C6H13NO2
- MW: 131.17
- EINECS:200-522-0
- MDL Number:MFCD00002617
- Synonyms:(s)-2-amino-4-methylvalericacid ;1-Leucine;2-amino-4-methylpentanoicacid ;2-amino-4-methyl-valericaci ;4-methyl-l-norvalin ;alpha-Amino-gamma-methylvaleric acid;alpha-amino-gamma-methylvalericacid ;iso-C4H9CH(NH2)COOH
73 prices
Selected condition:
Brand
- Acrotein
- AHH
- AK Scientific
- Alfa Aesar
- Arctom
- Chem-Impex
- ChemScene
- Crysdot
- CSNpharm
- DC Chemicals
- Frontier Specialty Chemicals
- Iris Biotech GmbH
- Labseeker
- Matrix Scientific
- Medical Isotopes, Inc.
- Sigma-Aldrich
- TRC
Package
- 20mg
- 200mg
- 1000
- 10mg
- 100mg
- sample-k
- 0.25G
- l0375000
- 1g
- 5g
- 10g
- 500g
- 1050201000
- 25g
- 50g
- 100g
- 250g
- 1kg
- 1000g
- 2500g
- 5kg
- 10KG
- 20KG
- 25KG
- ManufacturerAcrotein
- Product numberNA-0188
- Product descriptionL-Leucine 97%
- Packaging1kg
- Price$88
- Updated2021-12-16
- Buy
- ManufacturerAHH
- Product numberMT-16362
- Product descriptionL-Leucine 98%
- Packaging25g
- Price$708
- Updated2021-12-16
- Buy
- ManufacturerAK Scientific
- Product numberJ53020
- Product descriptionL-Leucine
- Packaging25g
- Price$10
- Updated2021-12-16
- Buy
- ManufacturerAlfa Aesar
- Product numberA12311
- Product descriptionL-Leucine, 99%
- Packaging100g
- Price$59.7
- Updated2023-06-20
- Buy
- ManufacturerAlfa Aesar
- Product numberJ18280
- Product descriptionL-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB
- Packaging100g
- Price$66.6
- Updated2023-06-20
- Buy
- ManufacturerAlfa Aesar
- Product numberJ62824
- Product descriptionL-Leucine, Cell Culture Reagent
- Packaging100g
- Price$108
- Updated2024-03-01
- Buy
- ManufacturerAlfa Aesar
- Product numberA12311
- Product descriptionL-Leucine, 99%
- Packaging500g
- Price$194
- Updated2023-06-20
- Buy
- ManufacturerAlfa Aesar
- Product numberJ62824
- Product descriptionL-Leucine, Cell Culture Reagent
- Packaging250g
- Price$211.65
- Updated2024-03-01
- Buy
- ManufacturerAlfa Aesar
- Product numberJ18280
- Product descriptionL-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB
- Packaging1kg
- Price$266
- Updated2023-06-20
- Buy
- ManufacturerAlfa Aesar
- Product numberJ62824
- Product descriptionL-Leucine, Cell Culture Reagent
- Packaging500g
- Price$401.65
- Updated2024-03-01
- Buy
- ManufacturerAlfa Aesar
- Product numberA12311
- Product descriptionL-Leucine, 99%
- Packaging2500g
- Price$832
- Updated2023-06-20
- Buy
- ManufacturerAlfa Aesar
- Product numberJ18280
- Product descriptionL-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB
- Packaging5kg
- Price$999
- Updated2023-06-20
- Buy
- ManufacturerArctom
- Product numberCFN94811
- Product descriptionL-Leucine
- Packaging20mg
- Price$30
- Updated2021-12-16
- Buy
- ManufacturerChem-Impex
- Product number29817
- Product descriptionL-Leucine ≥ 99% (Assay by titration)
- Packaging25G
- Price$10
- Updated2021-12-16
- Buy
- ManufacturerChem-Impex
- Product number00200
- Product descriptionL-Leucine 98.5 - 101.5% (Assay by titration)
- Packaging100G
- Price$12.5
- Updated2021-12-16
- Buy
- ManufacturerChem-Impex
- Product number33065
- Product descriptionL-Leucine, from non animal origin,suitable for cell culture 99 - 101% (Assay by titration,on dry basis)
- Packaging25G
- Price$15
- Updated2021-12-16
- Buy
Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|
Acrotein | NA-0188 | L-Leucine 97% | 1kg | $88 | 2021-12-16 | Buy |
AHH | MT-16362 | L-Leucine 98% | 25g | $708 | 2021-12-16 | Buy |
AK Scientific | J53020 | L-Leucine | 25g | $10 | 2021-12-16 | Buy |
Alfa Aesar | A12311 | L-Leucine, 99% | 100g | $59.7 | 2023-06-20 | Buy |
Alfa Aesar | J18280 | L-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB | 100g | $66.6 | 2023-06-20 | Buy |
Alfa Aesar | J62824 | L-Leucine, Cell Culture Reagent | 100g | $108 | 2024-03-01 | Buy |
Alfa Aesar | A12311 | L-Leucine, 99% | 500g | $194 | 2023-06-20 | Buy |
Alfa Aesar | J62824 | L-Leucine, Cell Culture Reagent | 250g | $211.65 | 2024-03-01 | Buy |
Alfa Aesar | J18280 | L-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB | 1kg | $266 | 2023-06-20 | Buy |
Alfa Aesar | J62824 | L-Leucine, Cell Culture Reagent | 500g | $401.65 | 2024-03-01 | Buy |
Alfa Aesar | A12311 | L-Leucine, 99% | 2500g | $832 | 2023-06-20 | Buy |
Alfa Aesar | J18280 | L-Leucine, 98.5-101.5% (dry basis), Ultrapure, Affymetrix/USB | 5kg | $999 | 2023-06-20 | Buy |
Arctom | CFN94811 | L-Leucine | 20mg | $30 | 2021-12-16 | Buy |
Chem-Impex | 29817 | L-Leucine ≥ 99% (Assay by titration) | 25G | $10 | 2021-12-16 | Buy |
Chem-Impex | 00200 | L-Leucine 98.5 - 101.5% (Assay by titration) | 100G | $12.5 | 2021-12-16 | Buy |
Chem-Impex | 33065 | L-Leucine, from non animal origin,suitable for cell culture 99 - 101% (Assay by titration,on dry basis) | 25G | $15 | 2021-12-16 | Buy |
Properties
Melting point :>300 °C (lit.)
Boiling point :122-134 °C(Press: 2-3 Torr)
alpha :15.4 º (c=4, 6N HCl)
Density :1,293 g/cm3
vapor pressure :<1 hPa (20 °C)
refractive index :1.4630 (estimate)
FEMA :3297 | L-LEUCINE
Flash point :145-148°C
storage temp. :2-8°C
solubility :1 M HCl: 50 mg/mL
form :powder
pka :2.328(at 25℃)
color :White to Off-white
PH :5.5-6.5 (20g/l, H2O, 20℃)
Odor :at 100.00?%. odorless
optical activity :[α]20/D +15.5°, c = 2 in 6 M HCl
Water Solubility :22.4 g/L (20 C)
λmax :λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05 JECFA Number :1423
Merck :14,5451
Sublimation :145-148 ºC
BRN :1721722
Stability :Stability Moisture and light sensitive. Incompatible with strong oxidising agents.
LogP :0.80
CAS DataBase Reference :61-90-5(CAS DataBase Reference)
NIST Chemistry Reference :Leucine(61-90-5)
EPA Substance Registry System :L-Leucine (61-90-5)
Boiling point :122-134 °C(Press: 2-3 Torr)
alpha :15.4 º (c=4, 6N HCl)
Density :1,293 g/cm3
vapor pressure :<1 hPa (20 °C)
refractive index :1.4630 (estimate)
FEMA :3297 | L-LEUCINE
Flash point :145-148°C
storage temp. :2-8°C
solubility :1 M HCl: 50 mg/mL
form :powder
pka :2.328(at 25℃)
color :White to Off-white
PH :5.5-6.5 (20g/l, H2O, 20℃)
Odor :at 100.00?%. odorless
optical activity :[α]20/D +15.5°, c = 2 in 6 M HCl
Water Solubility :22.4 g/L (20 C)
λmax :λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05 JECFA Number :1423
Merck :14,5451
Sublimation :145-148 ºC
BRN :1721722
Stability :Stability Moisture and light sensitive. Incompatible with strong oxidising agents.
LogP :0.80
CAS DataBase Reference :61-90-5(CAS DataBase Reference)
NIST Chemistry Reference :Leucine(61-90-5)
EPA Substance Registry System :L-Leucine (61-90-5)
Safety Information
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Description
L-leucine is one of the eight essential amino acids, and belonging to the aliphatic amino acids within twenty kinds of proteins. L-leucine and L-isoleucine and L-valine are called three branched chain amino acids. L-leucineLeucine and D-leucine are enantiomers . It is a white shiny hexahedral crystal or white crystalline powder at room temperature , Odorless, slightly bitter . In the presence of hydrocarbons ,it is stable in the aqueous mineral acid. Per gram is dissolved in 40ml water and about 100ml acetic acid. Very slightly soluble in ethanol or ether, dissolved in formic acid, dilute hydrochloric acid, a solution of alkali hydroxides and a solution of carbonates.L-leucine can promote insulin secretion, can lower blood sugar; promote sleep, reduce sensitivity to pain, migraine headaches, anxiety and ease tension, reduce symptoms of chemical reactions disorder in the body caused by alcohol , and helps control alcoholism; it has a role in the treatment of dizziness , also can promote skin wound and bone healing, so doctors usually advise patients to take leucine supplements after surgery. amino acid infusion and comprehensive amino acid preparations are often formulated to be used in the treatment or health care; also be used as food, cosmetics and feed additives and plant growth promoter.
The best food sources of leucine include brown rice, beans, meat, nuts, soy flour, and whole wheat. Excessive intake can also cause side effects, high intake can cause pellagra, vitamin A deficiency, dermatitis, diarrhea, mental disorders and other issues,which needs to be paid attention to . Diet containing too much leucine will increase the number of ammonia in the body and destroy the liver and kidney function. Therefore, patients with impaired liver or kidney function should not be excessive intake, otherwise it will exacerbate the condition.
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Suppliers and manufacturers
Maanshan Tiantai Biotechnology Co., Ltd.
Wuhan Fortuna Chemical Co.,Ltd