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SELENO-DL-METHIONINE

SELENO-DL-METHIONINE structure

CAS No:
2578-28-1
Formula:
C5H11NO2Se
Chemical Name:
SELENO-DL-METHIONINE
Synonyms:
2-AMINO-4-(METHYLSELENO)BUTYRIC ACID;AURORA KA-6143;D,L-2-AMINO-4-(METHYLSELENO)BUTANOIC ACID;DL-SELENOMETHIOININE;DL-SELENOMETHIONINE-13C1 (METHYL-13C) 99;D L-SELENOMETHIONINE 99+%;(+-)-butanoicaci;rac-(2R*)-2-[2-(Methylseleno)ethyl]glycine
Categories:
Chemical Reagents > Organic Reagents

Description

colorless, faint smelling, glistening powder

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.

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.]

SELENO-DL-METHIONINE Basic Attributes

Molecular Weight：

196.11

Exact Mass：

196.11

EC Number：

678-482-2

Color/Form：

Colorless

HScode：

29319090

Characteristics

PSA：

63.3

XLogP3：

-3.01 (est)

Appearance：

Colorless Glistening Powder

Melting Point：

267-269 °C

Boiling Point：

320.8ºC at 760 mmHg

Flash Point：

147.8ºC

Water Solubility：

0.5 M HCl: 50 mg/mL, clear, colorless

Storage Conditions：

−20°C

Vapor Pressure：

7.5X10-8 mm Hg at 25 deg C (est)

Critical Temperature & Pressure：

−20°C

Safety Information

Packing level：

Hazard category：

6.1(a)

Transport codes：

UN 3283 6.1/PG 2

wgk germany：

hazard class code：

T,N

safety instructions：

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

RTECS Number：

ES7110000

Marks：

T,N

Precautionary statement(s)：

P260, P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501

Hazard Statements：

A poison.

RIDADR：

UN 3283 6.1/PG 2

SELENO-DL-METHIONINE Use and Manufacturing

Seleno is a common method of protein crystallization, and selenomethionine (selenomethionine) is the most commonly used reagent for seleno. In use, this product is used as a nutrient to cultivate bacteria, so that the S element in the corresponding protein metabolized by the bacteria is replaced by the Se element, so that the crystal form of the protein can be observed by special instruments.

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CAS No.: 2578-28-1

Grade: Pharmaceutical Grade

Content: 99%

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