Products

L-Methionine

L-Methionine

CAS No.: 63-68-3
Molecular Formula: C5H11NO2S
Molecular Weight: 149.21
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product description

L-methionine is a sulfur-containing essential L-amino acid that is important in many body functions. Methionine is a dietary indispensable amino acid required for normal growth and development of humans, other mammals, and avian species. In addition to being a substrate for protein synthesis, it is an intermediate in transmethylation reactions, serving as the major methyl group donor.


Chemical Properties

PropertyValue

Melting point

284 °C (dec.)(lit.)

Alpha

23.25 º (c=2, 6N HCl)

Boiling point

393.91°C (estimate)

Density

1,34g/cm

Bulk density

550kg/m3

Refractive index

1.5216 (estimate)

Storage temp.

20-25°C

Solubility

1 M HCl: 0.5 M at 20 °C, clear, colorless

Pka

2.13(at 25℃)

Form

Solid

Color

White

Odor

Slight characteristic

PH

5-7 (10g/l, H2O, 20℃)

biological source

synthetic

Optical Rotation

[α]20/D +23.7±0.5°, c = 5% in 5 M HCl

Water Solubility

Soluble

λmax

λ: 260 nm Amax: 0.40λ: 280 nm Amax: 0.05

Merck

14,5975

BRN

1722294

Stability

Stable. Incompatible with strong oxidizing agents.

LogP

0.217 (est)

CAS DataBase Reference

63-68-3(CAS DataBase Reference)

NIST Chemistry Reference

L-Methionine(63-68-3)

EPA Substance Registry System

L-Methionine (63-68-3)


Safety Information

PropertyValue

Risk Statements

33

Safety Statements

24/25

WGK Germany

2

RTECS

PD0457000

F

10-23

TSCA

Yes

HS Code

29304010

Hazardous Substances Data

63-68-3(Hazardous Substances Data)

Toxicity

LD50 oral in rat: 36gm/kg


Product Usage

L-Methionine is an essential sulfur-containing amino acid that serves as a fundamental building block for protein synthesis and a key methyl donor in various metabolic pathways. In the animal feed industry, it is a critical additive, especially for poultry and swine, to balance amino acid profiles, promote healthy growth, and improve feather or fur quality. In the pharmaceutical sector, L-Methionine is utilized as an active ingredient in hepatoprotective drugs to support liver detoxification and treat fatty liver diseases. It is also a staple in the nutraceutical industry, where it is included in dietary supplements for hair, skin, and nail health, as well as formulations targeting joint support. Additionally, it serves as a high-value chemical intermediate in the synthesis of specialized flavorings and as a nutrient component in biomedical cell culture media.

Factory Showcase

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Quality Control Lab

实验室

Shipping And Transportation

Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
We only provide highest quality goods available, accompanied by after support!

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

 

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A:Of course, we welcome customers from all over the world to visit our factory.

 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

 

Q:What is your terms of payment ?
A:T/T, Cash, Western Union are all accepted if you have other payment,please contact me. 

 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

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