SELENO-DL-METHIONINE Property

Melting point:

267-269 °C

storage temp. 

−20°C

solubility 

0.5 M HCl: 50 mg/mL, clear, colorless

form 

Glistening Powder

color 

Colorless

Merck 

8441

CAS DataBase Reference

2578-28-1(CAS DataBase Reference)

Safety

Hazard Codes 

T,N

Risk Statements 

23/25-33-50/53

Safety Statements 

20/21-28-45-60-61-28A

RIDADR 

UN 3283 6.1/PG 2

WGK Germany 

3

RTECS 

ES7110000

F 

10

HazardClass 

6.1(a)

PackingGroup 

II

HS Code 

29319090

Hazard and Precautionary Statements (GHS)

SELENO-DL-METHIONINE Chemical Properties,Usage,Production

Chemical Properties

colorless, faint smelling, glistening powder

Definition

ChEBI: Selenomethionine is a selenoamino acid that is the selenium analogue of methionine. It has a role as a plant metabolite. It is a member of selenomethionines and a selenoamino acid.

Hazard

A poison.

Purification Methods

It crystallises in hexagonal plates from MeOH and H2O. [Klosterman & Painter J Am Chem Soc 69 2009 1949.] The L-isomer [3211-76-5] is purified by dissolving it in H2O, adjusting the pH to 5.5 with aqueous NH3, evaporating to near-dryness, and the residue is washed several times with absolute EtOH till a solid is formed and then recrystallise from Me2CO. It has m 266-268o(dec) [also 275o(dec)], and [] D +18.1o(c 1, N HCl). [Pande et al. J Org Chem 35 1440 1970, Beilstein 4 IV 3216.]