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L-Methionine CAS#63-68-3

  • L-Methionine CAS#63-68-3
  • L-Methionine CAS#63-68-3
  • L-Methionine CAS#63-68-3

L-Methionine CAS#63-68-3
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L-Methionine CAS#63-68-3
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Chemical Name：L-Methionine
CAS No.63-68-3
Molecular Formula：C5H11NO2S
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L-Methionine CAS#63-68-3

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.



L-Methionine Chemical Properties


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


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

Amino acid drugs, nutritional supplements. Used for fatty liver and cirrhosis. Also widely used as feed additives to improve feed quality, improve the utilization of the native protein and promote animal growth. Such as DL-methionine can increase egg production of chickens, pigs make weight gain, more milk cows and so on.

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