DL-Methionine

• CAS No:

59-51-8

• Formula:

C5H11NO2S

• Chemical Name:

DL-Methionine



Description

LWhite crystalline powder White, crystalline platelets or powder having a characteristic odor.One g dissolves in about 30 mL of water. It is soluble in dilute acids and in solutions of alkali hydroxides. It is very slightly soluble in alcohol, and practically insoluble in ether. It is optically inactive. The pH of a 1 in 100 solution is between 5.6 and 6.1. This substance may be prepared by addition of methanethiol to acrolein; by chemical conversion of methylthiopropionic aldehyde. d,l-

Solid|COLOURLESS CRYSTALS OR WHITE POWDER.|White crystalline platelets or powder; Characteristic aroma

Methionine is a sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4. It has a role as an Escherichia coli metabolite, a Saccharomyces cerevisiae metabolite, a plant metabolite, a Daphnia magna metabolite and an algal metabolite. It is an alpha-amino acid and a sulfur-containing amino acid. It derives from a butyric acid. It is a conjugate base of a methioninium. It is a conjugate acid of a methioninate. It is a tautomer of a methionine zwitterion.|A preparation of methionine that includes a mixture of D-methionine and L-methionine isomers.|A sulfur-containing essential L-amino acid that is important in many body functions.

DL-Methionine Basic Attributes

Molecular Weight ：149.21

Exact Mass ：149.21

BRN ：636185

EC Number ：200-432-1

ICSC Number ：0919

NSC Number ：522406|118113|45689|22946|9241

DSSTox ID ：DTXSID9020821

ATC Code ：V - Various

Characteristics

PSA ：88.6

XLogP3 ：-1.9

Appearance ：White Crystals or Crystalline Powder

Density ：1.3 g/cm3

Melting Point ：281 °C (decomp)

Boiling Point ：181 deg C (decomposes)

Flash Point ：139.4±26.5 °C

Refractive Index ：1.531

Water Solubility ：H2O: 2.9 g/100 mL (20 ºC);1 M HCl: 0.5 M at 20 °C, clear, colorless

Storage Conditions ：0-6°C

Vapor Pressure ：8.14X10-8 mm Hg at 25 deg C (est)

DL-Methionine Use

An essential nonpolar amino acid with oxidative stress defense properties.DL-methionine can be used as a nutritional supplement.Feed nutrition enhancer.Biochemical research; used for the cultivation of mammalian and insect cells where mixed isomers are marked

Manufacturing Info ：

Methionine: ACTIVE

Use Classification ：EPA Safer Chemical Functional Use Classes -> Enzymes and Enzyme Stabilizers|Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern|Food additives -> Flavoring Agents|Human Drugs -> EU pediatric investigation plans|Flavoring Agents -> JECFA Flavorings Index|Cosmetics -> Antistatic; Hair conditioning; Skin conditioning

Food Additive Classes ：Flavoring Agents