L-Methionine
36 Inquiries
63-68-3
99%
Bottle,barrel,cargo,container,etc.
2026-10-13
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Product Description
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Seller Information
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Inquiry History
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DescriptionKeywords
L-Methionine
63-68-3
C5H11NO2S
Quick DetailsProName:L-Methionine
CasNo:63-68-3
Molecular Formula:C5H11NO2S
Appearance:powder, or liquid
Application:Pharmaceuticals, intermediates, APIs, custom synthesis, chemicals
DeliveryTime:5-7 Days
PackAge:Bottle, barrel, cargo, container, etc.
Port:Shanghai
Purity:99
Storage:Stored in room temperature, ventilated place
Transportation:By air, ship, express, etc.
LimitNum:0
Grade:Industrial Grade
SuperiorityBest Seller, High Quality, Competitive Price, Fast Delivery, Quick Response
DetailsLEAPChem supplies high quality Pharmaceuticals, intermediates, APIs, custom synthesis, fine chemicals and other industrial chemicalsECHEMI Editorial ReferenceL-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.
Minute hexagonal plates from dilute alcohol. (NTP, 1992)|Solid
Minute hexagonal plates from dilute alcohol. (NTP, 1992)|L-methionine is the L-enantiomer of methionine. It has a role as a nutraceutical, a micronutrient, an antidote to paracetamol poisoning, a human metabolite and a mouse metabolite. It is an aspartate family amino acid, a proteinogenic amino acid, a methionine and a L-alpha-amino acid. It is a conjugate base of a L-methioninium. It is a conjugate acid of a L-methioninate. It is an enantiomer of a D-methionine. It is a tautomer of a L-methionine zwitterion.|A sulfur containing essential amino acid that is important in many body functions. It is a chelating agent for heavy metals.|Methionine is one of nine essential amino acids in humans (provided by food), Methionine is required for growth and tissue repair. A sulphur-containing amino acid, methionine improves the tone and pliability of skin, hair, and strengthens nails. Involved in many detoxifying processes, sulphur provided by methionine protects cells from pollutants, slows cell aging, and is essential for absorption and bio-availability of selenium and zinc. Methionine chelates heavy metals, such as lead and mercury, aiding their excretion. It also acts as a lipotropic agent and prevents excess fat buildup in the liver. (NCI04)|A sulfur-containing essential L-amino acid that is important in many body functions.Basic Info-
Product Name:
l-Methionine
Other Name:L-Methionine;Methionine,L-;Cymethion;Methionine;Butanoic acid,2-amino-4-(methylthio)-,(S)-;2-Amino-4-(methylthio)butyric acid;S-Methionine;α-Amino-γ-methylmercaptobutyric acid;γ-Methylthio-α-aminobutyric acid;(S)-2-Amino-4-(methylthio)butanoic acid;l-Methionine;L-α-Amino-γ-methylthiobutyric acid;L-Homocysteine,S-methyl-;h-Met-oh;Acimethin;NSC 22946;S-Methyl-L-homocysteine;Secretory peptide (human clone HTXDU73);Methiorep;Meth-o-Tas;(2S)-2-Azaniumyl-4-methylsulfanylbutanoate;(2S)-2-Amino-4-(methylsulfanyl)butanoic acid;7005-18-7;24425-78-3;1437749-32-0;1437749-60-4;1437749-65-9;1437749-75-1;1437749-80-8;1437769-00-0;1437870-94-4;1437870-95-5;1437870-97-7;1437870-98-8;1437871-20-9;1463481-01-7;1463481-06-2;1463481-15-3;1463481-19-7;1463481-23-3;1463481-27-7;1463481-31-3;1463481-37-9;1463481-41-5;1463481-46-0;1463481-51-7;1463481-58-4;1463481-73-3;1463481-80-2;1463481-89-1;1463610-75-4;1463610-76-5;1466415-57-5
CAS No.:63-68-3
Molecular Formula:C5H11NO2S
InChIKeys:InChIKey=FFEARJCKVFRZRR-BYPYZUCNSA-N
Molecular Weight:149.21100
Exact Mass:149.21
EC Number:200-562-9
UNII:AE28F7PNPL
NSC Number:760117
DSSTox ID:DTXSID5040548
NCI Thesaurus Code:C29600
Color/Form:Minute hexagonal plates from dilute alcohol|Colorless or white, lustrous plates or as white, crystalline powder
ATC Code:V - Various
HScode:2930400000
Categories:
Characteristics-
PSA:
88.62000
XLogP3:-1.9
Appearance:Minute hexagonal plates from dilute alcohol. (NTP, 1992)
Density:1.206 g/cm3
Melting Point:280-282 °C (decomp)
Boiling Point:123-126 °C @ Press: 15 Torr
Flash Point:139.4ºC
Refractive Index:1.531
Water Solubility:H2O: soluble
Storage Conditions:Store at RT.
Vapor Pressure:8.14X10-8 mm Hg at 25 deg C (est)
Toxicity:LD50 oral in rat: 36gm/kg
Specific rotation:Specific optical rotation: 22.5 deg at 25 °C/D (1 N HCl)
Odor:Faint
Taste:Sulfurous
PH:pH (1% aqueous solution) = 5.6-6.1
PKA:2.28(at 25 °C)
Henrys Law Constant:Henry's Law constant = 2.11X10-11 atm-cu m/mol at 25 °C (est)
Dissociation Constants:2.28 (at 25 °C)|pKa = 2.28; pK2 = 9.21
Collision Cross Section:133.65 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|152.05 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|127 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|133.1 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|132 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|134.08 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|140.5 Ų [M-H]-
Experimental Properties:Platelets from alcohol. mp 281 °C (decomposes), density 1.340; pKa1 = 2.28, pKa2 = 9.21; pH of 1% aqueous solution 5.6-6.1; Rf value 0.77. Solubility in water (g/L) at 0 °C: 18.18; at 25 °C: 33.81; at 50 °C: 60/.70; at 75 °C: 15.2 °C. Soluble in dilute acids, alkalies. Very slightly soluble in 95% alcohol. Insoluble in ether. /Methionine, DL-form/|UV: 1-65 (Organic Electronic Spectral Data, Phillips et al, John Wiley & Sons, New York) /Methionine (DL)/|Hydroxyl radical reaction rate constant = 5.13X10-11 cu cm/molec-sec at 25 °C (est)
Air and Water Reactions:Reacts with water, steam, and/or acids to produce toxic and flammable vapors of hydrogen sulfide (NTP, 1992). Water soluble (NTP, 1992). pH of 1% aqueous solution is 5.6-6.0.
Reactive Group:Sulfides, Organic
Reactivity Profile:An organosulfide and amine derivative, carboxylic acid. Look at Reactive Groups 20 (organosulfides), 7 (amines), and 3 (carboxylic acids) may give indications about reactive tendencies. It is an amino acid essential in human nutrition.
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
Separated from strong oxidants. Well closed.
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Seller Information
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Business Type:
Trader
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Main Products:
Intermediates,Building blocks,API,Silicones,Peptides,Lab chemicals
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Location:
Room A, 23rd Floor, No. 609 Yan'an Road, Gongshu District, Hangzhou, Zhejiang
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Payment Terms:
TT against copy of documents,D/P,L/C
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Average lead Time:
5
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Total Annual Revenue:
Above $100 million
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Year of Establishment:
2020
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Certifications:
ISO
">Company ProfileLEAPChem is a specialized fine chemical supplier for research, development and production.
LEAPChem provides nearly 200,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities.
As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner.
Our client list includes many major pharmaceutical and science companies, universities, research institutions and chemical catalogue companies.
Methodology: Sound & Stable; Active & Innovative.
Attitude: Conscientious; Ingenious.
Goals: Customer's Satisfaction
We regard client's success as our success.
At LEAPChem, we strive to be the preferred supplier for efficiency increasing and cost lowering in your Research & Production.
To achieve this strategic vision, we always push ourselves to exceed our customer's requirement. By focusing on the aim of 'Beyond Your Expectation', we continually expand our product lines, and enhance our systematic management and human resources.
Welcome to contact us and we look forward to becoming your reliable and preferred partner.
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Inquiry History36 Inquiries
Country Product Purchase Quantity Date Posted 
India
L-Methionine
100.00 KG Jun 6, 2025 
Malaysia
L-Methionine
20.00 MT Apr 1, 2026
Malaysia
L-Methionine
20.00 MT Jun 16, 2026
India
L-Methionine
1.00 KG Aug 21, 2026
India
Methionine
1.00 20' Fcl May 25, 2026
India
L-Methionine
1.00 20' Fcl Apr 27, 2026
India
L-Methionine
200.00 KG Nov 10, 2025
India
L-Methionine
5.00 MT Jul 16, 2025
India
L-Methionine
10.00 TON Jul 9, 2025
India
L-Methionine
7.00 KG Jul 9, 2025 
Bangladesh
L-methionine
1 MT Feb 5, 2025 
Singapore
L-Methionine
1 MT Feb 7, 2024 
Guatemala
dl-methionine dl methionine 99% feed grade for poultry feedPopular 1 buyer
25 MT Oct 31, 2023
India
L-Methionine
1 KG Apr 7, 2026 
Greece
METHIONINE
300 KG Sep 24, 2025 
Belgium
DL-Methionine
4 40' Fcl Sep 18, 2025 
Algeria
methionine
1 KG Jul 23, 2025
India
L-Methionine
5.00 MT Jul 17, 2025
India
L-Methionine
1 MT Apr 23, 2025
India
L-METHIONINE
25.00 KG Mar 25, 2025 Post an enquiry for this product
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