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2-アミノ-4-(メチルセレノ)酪酸

2-アミノ-4-(メチルセレノ)酪酸 化學(xué)構(gòu)造式
1464-42-2
CAS番號.
1464-42-2
化學(xué)名:
2-アミノ-4-(メチルセレノ)酪酸
別名:
2-アミノ-4-(メチルセレノ)ブタン酸;2-アミノ-4-(メチルセレノ)酪酸;DL-セレノメチオニン;DL‐セレノメチオニン;2-アミノ-4-(メチルセラニル)ブタン酸
英語名:
DL-Selenomethionine
英語別名:
Selenomethionine;Selenium methionine;seleniummethionine;Seleno-DL-methionine;C05335;DL-Se-Met;methionine,seleno;Methionine, seleno;DL-SELENOMETHIONINE;SELENOMETHIONINE 98+%
CBNumber:
CB4505790
化學(xué)式:
C5H11NO2Se
分子量:
196.11
MOL File:
1464-42-2.mol
MSDS File:
SDS

2-アミノ-4-(メチルセレノ)酪酸 物理性質(zhì)

融點 :
267-269 °C
沸點 :
320.8±37.0 °C(Predicted)
貯蔵溫度 :
-20°C
溶解性:
almost transparency in 1mol/L HCl
酸解離定數(shù)(Pka):
2.26±0.10(Predicted)
外見 :
個體
色:
White to Almost white
水溶解度 :
溶ける
Merck :
14,8441
BRN :
1758204
NISTの化學(xué)物質(zhì)情報:
Butanoic acid, 2-amino-4-(methylseleno)-(1464-42-2)
EPAの化學(xué)物質(zhì)情報:
Butanoic acid, 2-amino-4-(methylseleno)- (1464-42-2)
安全性情報
  • リスクと安全性に関する聲明
  • 危険有害性情報のコード(GHS)
主な危険性  T,N
Rフレーズ  23/25-33-50/53
Sフレーズ  20/21-28-45-60-61
RIDADR  UN 3283
WGK Germany  3
RTECS 番號 ES7110000
國連危険物分類  6.1
容器等級  III
HSコード  2931909000
有毒物質(zhì)データの 1464-42-2(Hazardous Substances Data)
安衛(wèi)法 57,57-2
PRTR法 第一種指定化學(xué)物質(zhì)
毒劇物取締法 毒物
絵表示(GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
注意喚起語 危険
危険有害性情報
コード 危険有害性情報 危険有害性クラス 區(qū)分 注意喚起語 シンボル P コード
H373 長期にわたる、または反復(fù)暴露により臓器の障 害のおそれ 特定標的臓器有害性、単回暴露 2 警告 P260, P314, P501
H410 長期的影響により水生生物に非常に強い毒性 水生環(huán)境有害性、慢性毒性 1 警告 GHS hazard pictograms P273, P391, P501
注意書き
P260 粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。
P264 取扱い後は皮膚をよく洗うこと。
P264 取扱い後は手や顔をよく洗うこと。
P273 環(huán)境への放出を避けること。
P301+P310 飲み込んだ場合:直ちに醫(yī)師に連絡(luò)すること。
P314 気分が悪い時は、醫(yī)師の診斷/手當てを受けること。

2-アミノ-4-(メチルセレノ)酪酸 価格 もっと(10)

メーカー 製品番號 製品説明 CAS番號 包裝 価格 更新時間 購入
富士フイルム和光純薬株式會社(wako) W01USP1611955 セレノメチオニン
Selenomethionine
1464-42-2 100mg ¥82500 2024-03-01 購入
東京化成工業(yè) S0462 DL-セレノメチオニン >98.0%(HPLC)(T)
DL-Selenomethionine >98.0%(HPLC)(T)
1464-42-2 1g ¥12900 2024-03-01 購入
関東化學(xué)株式會社(KANTO) 24077-3A DL‐セレノメチオニン >99.0%
DL‐Selenomethionine >99.0%
1464-42-2 2.5g ¥114510 2024-07-01 購入
関東化學(xué)株式會社(KANTO) 24077-2A DL‐セレノメチオニン >99.0%
DL‐Selenomethionine >99.0%
1464-42-2 1g ¥60280 2024-07-01 購入
Sigma-Aldrich Japan S3875 セレノ-DL-メチオニン ≥99% (TLC)
Seleno-DL-methionine ≥99% (TLC)
1464-42-2 100mg ¥23600 2024-03-01 購入

2-アミノ-4-(メチルセレノ)酪酸 化學(xué)特性,用途語,生産方法

外観

白色~ほとんど白色粉末~結(jié)晶

説明

Selenomethionine is the major form of selenium in plant foods. Selenomethionine is identical to methionine, except that selenium replaces the sulfur atom. The selenium consumed as selenocysteine is broken down to form alanine and hydrogen selenide (H2Se). The breakdown pathway of selenomethion- ine is not clear. Although selenium does not occur to a great extent as selenite in foods, selenite is readily used as a source of the element by humans and animals. Selenium also occurs as selenate in foods such as beet leaves, garlic, and cabbage.
説明図
DL-Selenomethionine is a selenium (Se) analogue of methionine in which sulfur is replaced with the trace element selenium. Selenomethionine (SeMet) can incorporate into proteins in place of methionine with no effects on protein structure and function, providing a mechanism for reversible Se storage in organs and tissues. Free selenium is incorporated into selenocysteine, an amino acid found in more than thirty selenoproteins including the glutathione peroxidases (GPx) enzymes, thioredoxin reductase (TR) and the iodothyronine deiodinase enzymes.

使用

Selenium as selenite, DL-selenomethionine, and DL-selenocystine was equally effective in preventing liver necrosis, but factor 3 selenium was three times more effective than these forms (Burk, 1976; Schwarz and Foltz, 1958).

生物學(xué)の機能

Most selenium in animal tissues is present as selenomethionine or selenocysteine. Selenomethionine, which cannot be synthesized by humans and is initially synthesized in plants, is incorporated randomly in place of methionine in a variety of proteins obtained from plant and animal sources. Selenium is present in varying amounts in these proteins, which are called selenium-containing proteins.
Selenomethionine is not known to have a physiological function separate from that of methionine.
Selenocysteine is present in animal selenoproteins that have been characterized (see below) and is the form of selenium that accounts for the biological activity of the element. In contrast to selenomethionine, there is no evidence that selenocysteine substitutes for cysteine in humans.

生物活性

Most dietary selenium is highly bioavailable. Selenomethionine, which is estimated to account for at least half of the dietary selenium, is absorbed by the same mechanism as methionine, and its selenium is made available for selenoprotein synthesis when it is catabolized via the transsulfuration pathway (Esaki et al., 1982). The bioavailability of selenium in the form of selenomethionine is greater than 90 percent (Thomson and Robinson, 1986). The selenium in selenocysteine, another significant dietary form, is also highly bioavailable (Swanson et al., 1991). There appear to be some minor dietary forms of selenium (especially present in fish) that have relatively low bioavailability, but these forms have not been identified (Cantor and Tarino, 1982). Selenate and selenite, two inorganic forms of selenium, have roughly equivalent bioavailability which generally exceeds 50 percent (Thomson and Robinson, 1986). Although they are not major dietary constituents, these inorganic forms are commonly used as selenium supplements.

代謝

Selenomethionine, derived mainly from plants, enters the methionine pool in the body and shares the fate of methionine until catabolized by the transsulfuration pathway. The resulting free selenocysteine is further broken down with liberation of a reduced form of the element, which is designated selenide (Esaki et al., 1982). Ingested selenite, selenate, and selenocysteine are all apparently metabolized directly to selenide. This selenide may be associated with a protein that serves as a chaperone (Lacourciere and Stadtman, 1998). The selenide can be metabolized to selenophosphate, the precursor of selenocysteine in selenoproteins (Ehrenreich et al., 1992) and of selenium in transfer RNA (Veres et al., 1992), or it can be converted to excretory metabolites (Mozier et al., 1988), some of which have been characterized as methylated forms.

純化方法

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.]

2-アミノ-4-(メチルセレノ)酪酸 上流と下流の製品情報

原材料

準備製品


2-アミノ-4-(メチルセレノ)酪酸 生産企業(yè)

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2-アミノ-4-(メチルセレノ)酪酸  スペクトルデータ(1HNMR)


1464-42-2(2-アミノ-4-(メチルセレノ)酪酸)キーワード:


  • 1464-42-2
  • 2-amino-4-(methylselenyl)-butyricaci
  • 2-amino-4-(methylselenyl)butyricacid
  • Butyric acid, 2-amino-4-(methylselenyl)-
  • Methionine, seleno
  • methionine,seleno
  • selenomethionine(van)
  • SELENOMETHIONINE (100 MG)
  • DL-SELENOMETHIONINE
  • SELENOMETHIONINE 98+%
  • Butanoic acid, 2-amino-4-(methylseleno)-
  • 2-amino-4-methylselanyl-butanoic acid
  • 2-Amino-4-(methylseleno)butanoic acid
  • Seleno-DL-Methionine >=99% (TLC)
  • DL-Selenomethionine
  • C05335
  • 2-amino-4-(methylseleno)-butanoicaci
  • 2-Amino-4-(methylselenyl)butyric acid
  • 1-BUTANOIC ACID 2-AMINO-4-(METHYL SELEN O
  • DL-Selenomethionine>
  • DL-Selenomethionine USP/EP/BP
  • DL-Se-Met
  • Selenomethionine (1611955)
  • Selenium methionine
  • seleniummethionine
  • Seleno-DL-methionine
  • Selenomethionine
  • Selenomethionine,DL-Selenomethionine
  • Selenium-selenomethionine
  • Seleno-DL-methionine
  • 2-アミノ-4-(メチルセレノ)ブタン酸
  • 2-アミノ-4-(メチルセレノ)酪酸
  • DL-セレノメチオニン
  • DL‐セレノメチオニン
  • 2-アミノ-4-(メチルセラニル)ブタン酸
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