L-Leucine in bulk
10 Inquiries
61-90-5
Food Grade
NINGBO
25kg/0.12kg Bag
2017-04-27
L-CYSTEINE HCL MONO /ANHYDROUS,L-CYSTINE ,,L-TYROSIEN, L-LEUCINE., L-ARGININE ASPARTATE ,,L-TRYPTOPHAN,L-THREONINE N-ACETYL-L-CYSTEINE,N-ACETYL-L-TYROSINE
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Product Description
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Seller Information
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Inquiry History
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DescriptionL- leucine, also known as leucine, is chemically called alpha amino acid, and Proust was first isolated from cheese in 1819. Later, Braconnot obtained its crystallization from the acid hydrolysate of muscle and wool, and named it leucine. L is a common leucine eighteen amino acids in a human body, eight is one of the essential amino acids, as a L L L- isoleucine, leucine and valine molecule contains a methyl side chain known as the Branched chain Amina acids (branched chain amino acids,Basic Info
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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:
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 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|138.71 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|128 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|134.8 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|130.6 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|132.51 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|135.56 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|131.8 Ų [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)
Hazard IdentificationClassification of the substance or mixture
Not classified.
GHS label elements, including precautionary statements
Pictogram(s) No symbol. Signal word No signal word
Hazard statement(s) none
Precautionary statement(s) Prevention none
Response none
Storage none
Disposal none
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions 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.
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Seller Information
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Business Type:
Manufactory
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Main Products:
L-CYSTEINE HCL MONO /ANHYDROUS,L-CYSTINE ,,L-TYROSIEN, L-LEUCINE., L-ARGININE ASPARTATE ,,L-TRYPTOPHAN,L-THREONINE N-ACETYL-L-CYSTEINE,N-ACETYL-L-TYROSINE
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Location:
629 zhenning east road zhenhai ningbo china
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Payment Terms:
TT against copy of documents,L/C,D/A
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Average lead Time:
60
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Total Annual Revenue:
$2.5 million-$5 million
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Total Employees:
11-50
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Year of Establishment:
1991
Ningbo Zhenhai Amino Acid Factory was established at the end of 1990. The factory is located on the coast of the beautiful East China Sea with convenient transportation. There are nearly 100 employees, the factory area is 10,000 square meters, the construction area is 5,000 square meters, and the fixed assets are 10 million yuan. With domestic advanced production equipment and testing capabilities, the annual production capacity of L-cysteine is 400 tons. The factory has strong technical force and ten technicians with intermediate level or above. It is one of the domestic professional manufacturers of cysteine series products. One. The main products of the factory are: 1, L-cysteine hydrochloride hydrate 2, L-cysteine hydrochloride anhydrous 3, L-cysteine 4, L-cystine 5, L- Leucine 6, L-tyrosine 7, L-arginine 8, L-arginine hydrochloride 9, L-histidine hydrochloride 10, L-isoleucine 11, L-va 12-L, threonine 13, L-ornithine hydrochloride 14, L-tryptophan 15, L-histidine 16, L-cysteine hydrochloride ethyl ester 17, L- Cysteine hydrochloride methyl ester 18, L-methionine 19, L-lysine base 20, L-lysine hydrochloride 21, L-alanine 22, L-proline 23 , L-serine 24, S-carboxymethyl-L-cysteine 25, N-ethyl ester-L-cysteine 26, N-ethyl ester-L-tyrosine 27, N-ethyl ester- L-leucine 28, DL-methionine 29, DL-tryptophan 30, DL-threonine 31, DL-isoleucine 32, DL-lysine 33, DL-valine 34, D- Tryptophan 35, D-threonine 36, D-methionine 37, D-isoleucine. All products of our factory comply with international standards such as Japanese Ajinomoto, American Pharmacopoeia, European Pharmacopoeia, and most of the products have obtained KOSHER certification. 99% of the products are exported and exported to Europe, the United States, Southeast Asia and other places. In recent years, the factory has been ranked ahead of its peers with high-quality products, good reputation, and good after-sales services. It has been rated as the key enterprise of foreign exchange earning in Zhejiang Province for three consecutive years and the largest enterprise in Zhejiang Province. In order to make the enterprise develop and grow continuously, the factory is currently cooperating with the scientific research departments of several domestic colleges and universities, and actively introducing talents, relying on scientific and technological strength, vigorously develop new amino acid products. Based on the concept of integrity and customer first, our factory hopes to establish good cooperative relations with friends and colleagues from all walks of life at home and abroad.
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Inquiry History10 Inquiries
Country Product Purchase Quantity Date Posted
United States
L-Leucine
50 MG Jul 20, 2026
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 Post an enquiry for this product
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