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Nutrition Food Ingredient Amino Acid CAS 61-90-5 L-Leucine

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CAS No.:

61-90-5

Grade:

Food Grade

Content:

99.9%

Port:

qingdao

Packaging:

25kg bag or as your required

Price valid (until):

2024-02-26

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Hebei Runxuchen trading Co., LTD

Company Type:

Manufactory

Location:

China

Qualification:

Main Products:

peptide

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Product Description
Seller Information
Inquiry History

Description

Product Detail

L-cysteine is an amino acid antidote, which participates in the reduction process of cells and phospholipid metabolism in the liver, protects liver cells from damage, promotes liver function recovery and vigorous pharmacological effects. It is mainly used for radiopharmaceutical poisoning, heavy metal poisoning, antimony poisoning, hepatitis, toxic hepatitis, serum sickness, etc., and can prevent liver necrosis. If this product is used for the rescue of antimony poisoning, it should be administered in time and in sufficient quantities, so that it can be excreted with antimony ions to the greatest extent possible to generate non-toxic soluble complexes.

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Food Grade:

Item	Specifications (AJI97 )
Appearance	White crystal or crystalline powder; tasteless
Assay, %	98.5~101.0
Specific rotation	-218°~ -224°
Loss on drying, %	≤0.2
Transmittance, %	≥98.0
Chloride (as Cl), %	≤0.02
Sulfate (as SO4), %	≤0.02
Ammonium as (as NH4), %	≤0.02
Iron (as Fe), %	≤0.001
Heavy Metals (as Pb), %	≤0.001
pH Value	5.0~6.5
Residue on ignition, %	≤0.1
Other amino acid	Conforms
Item	Specifications (AJI97 )

Pharm Grade:

Item	Specifications (AJI97 )
Appearance	White crystal or crystalline powder; tasteless
Assay, %	98.5~101.0
Specific rotation	-218°~ -224°
Loss on drying, %	≤0.2
Transmittance, %	≥98.0
Chloride (as Cl), %	≤0.02
Sulfate (as SO4), %	≤0.02
Ammonium as (as NH4), %	≤0.02
Iron (as Fe), %	≤0.001
Heavy Metals (as Pb), %	≤0.001
pH Value	5.0~6.5
Residue on ignition, %	≤0.1
Other amino acid	Conforms
Item	Specifications (AJI97 )
Appearance	White crystal or crystalline powder; tasteless
Assay, %	98.5~101.0
Specific rotation	-218°~ -224°

Usage

Mainly used in medicine, cosmetics, biochemical research and other aspects.

1. Used in bread to promote gluten formation and promote fermentation, mold production, prevent aging, etc.

2. Used in natural fruit juice to prevent vitamin C oxidation and prevent the juice from turning brown.

3. The product has detoxification effect and can be used for acrylonitrile poisoning and aromatic acidosis. The product also has the effect of preventing radiation damage to the human body, and is also a drug for the treatment of bronchitis, especially as a phlegm reducing drug (mostly used in the form of acetyl L-cysteine methyl esterate.

4. Cosmetics are mainly used for beauty water, perm liquid, skin cream for sun protection, etc

Basic Info

Product Name:

L-Leucine

Other Name:

L-Leucine;Leucine,L-;Leucine;Pentanoic acid,2-amino-4-methyl-,(S)-;Leu;(S)-2-Amino-4-methylvaleric acid;(S)-(+)-Leucine;(S)-2-Amino-4-methylpentanoic acid;(S)-Leucine;L-α-Aminoisocaproic acid;L-(+)-Leucine;L-Norvaline,4-methyl-;NSC 46709;(2S)-2-Amino-4-methylpentanoic acid;L-2-Amino-4-methylpentanoic acid;(2S)-2-Amino-4-methylpentanoic acid;1: PN: WO2020097235 SEQID: 238 claimed sequence;17: PN: WO2021055880 SEQID: 18 claimed protein;7005-03-0

CAS No.:

61-90-5

Molecular Formula:

C6H13NO2

InChIKeys:

InChIKey=ROHFNLRQFUQHCH-YFKPBYRVSA-N

Molecular Weight:

131.17300

Exact Mass:

131.17

EC Number:

200-522-0

UNII:

GMW67QNF9C

NSC Number:

760100

DSSTox ID:

DTXSID9023203

NCI Thesaurus Code:

C29599

Color/Form:

White glistening hexagonal plates from aqueous alcohol|White crystals

HScode:

29224995

Categories:

Sweeteners

Characteristics

PSA:

63.32000

XLogP3:

-1.5

Appearance:

Solid

Density:

1.14 g/cm³

Melting Point:

293 °C

Boiling Point:

122-134 °C @ Press: 2-3 Torr

Flash Point:

90.3ºC

Refractive Index:

1.463

Water Solubility:

H2O: 22.4 g/L (20 C)

Storage Conditions:

Store at RT.

Vapor Pressure:

<1 hPa (20 °C)

Specific rotation:

Specific optical rotation: -10.8 at 25 °C/D (c = 2.2); +15.1 deg at 26 °C/D in 6N HCl (38 mols HCl per mol leucine); +7.6 deg at 20 °C/D in 3N NaOH (30 mols NaOH per mol leucine). Molecular rotation: +21.0 deg at /D (5NHCl); +29.5 deg /D (glacial acetic acid)

PKA:

2.35(at 13 °C)

Henrys Law Constant:

Henry's Law constant = 3.49X10-9 atm-cu m/mol at 25 °C (est)

Dissociation Constants:

2.35 (at 13 °C)|pKa = 2.35|pKa1 = 2.36 (carboxylic acid); pKa2 = 9.63 (amine) (est)

Collision Cross Section:

135.16 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|138.71 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|128 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|134.8 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|130.6 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|132.51 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|135.56 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|131.8 Å² [M-H]-

Experimental Properties:

Crystals. Freely soluble in water. /Leucine hydrochloride/|Hydroxyl radical reaction rate constant = 4.23X10-11 cu cm/molec-sec at 25 °C (est)

See More L-Leucine Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More L-Leucine Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
peptide

Location:
south road and north road

Payment Terms:
TT against copy of documents,L/C,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
15

Total Annual Revenue:
$1 million-$2.5 million

Total Employees:
11-50

Year of Establishment:
2022
Hebei runxuchen trading Co., Ltd. is a modern and advanced enterprise specializing in the production and export of peptide products, synthetic peptides, cosmetic raw materials, beauty and slimming products etc Products are widely used in health products, peptides and other fields. Our plant covers an area of 1000 m². The proposed workshop will be built according to GMP standards. We provide our customers with quality products and first-class service. Now, we can provide G-KG service to our customers.
High-Quality Peptides: Our company specializes in premium-grade peptides, ensuring the highest standards of purity and efficacy. Each product undergoes rigorous testing to guarantee superior quality and performance.

Cutting-Edge Technology: We leverage the latest advancements in peptide synthesis and production technology. Our state-of-the-art facilities and innovative processes enable us to deliver peptides with exceptional precision and consistency.

Custom Solutions: We offer tailored peptide solutions to meet the specific needs of our clients. Whether you require bespoke formulations or custom quantities, our experienced team is dedicated to providing personalized support and solutions.

Extensive Expertise: With years of experience in the peptide industry, our team of experts is well-versed in the complexities of peptide development and applications. We are committed to providing insightful guidance and technical support to help you achieve your goals.

Comprehensive Product Range: Our diverse portfolio of peptide products covers a wide range of applications, including research, pharmaceutical development, and cosmetic formulations. This allows us to cater to various industries and meet different customer needs.

Inquiry History

9 Inquiries

Country	Product	Purchase Quantity	Date Posted
United States	L-leucine	10 MT	Jun 10, 2025
India	L-Leusine	25 KG	Apr 21, 2025
Switzerland	L- Leucine instant water soluble	2 MT	Jan 25, 2024
India	L-Leucine	17952 KG	Jul 8, 2026
Greece	LEUCINE (Leu,L)	1000.00 KG	Sep 25, 2025
India	L-Leucine	1 MT	Apr 23, 2025
India	L Leucine	30.00 TON	Aug 30, 2024
India	Leucine	50 G	Jun 10, 2024
India	L-Leucine	500 KG	Aug 22, 2023

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Nutrition Food Ingredient Amino Acid CAS 61-90-5 L-Leucine

Product Description

Seller Information