(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H228：可燃性固体

• 注意書き

  P210：熱/火花/裸火/高温のもののような着火源から遠ざ けること。－禁煙。

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 価格

(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 化学特性,用途語,生産方法

• 説明

  The generation of β-lactamases by bacteria affords resistance to several classes of β-lactam antibiotics, including penicillins and cephalosporins. Nitrocefin is a chromogenic cephalosporin substrate commonly used to detect β-lactamases in bacteria. The presence of β-lactamase activity is indicated by the appearance of a red color that is proportional in intensity to the original concentration of nitrocefin.

• 化学的特性

  Nitrocefin is the chromogenic cephalosporin that acts as an excellent β-lactamase substrate. It exhibits a rapid distinctive color change from yellow (max at pH 7.0 = 390 nm) to red (max at pH 7.0 = 486 nm) as the amide bond in the beta-lactam ring is hydrolyzed by a β-lactamase. It is sensitive to hydrolysis by all known lactamases produced by Gram-positive and Gram-negative bacteria.
  Nitrocefin (Yellow) --β-lactamase-->Product (Red) (OD486nm)
  Solution preparation and color change before and after β-lactamase exposure
  
  (A) Concentrated nitrocefin (10.0 mg/mL) in DMSO before dilution with PBS buffer. (B) Nitrocefin diluted with PBS buffer to working concentration (1.0 mg/mL). The yellow color is indicative of intact, undegraded nitrocefin. (C) 25 units of betalactamase dropped on top of nitrocefin (1.0 mg/mL in PBS). The red color is the result of beta-lactamase mediated cleavage of the nitrocefin. (D) Vortexed mixture of contents shown in picture (C).

• 使用

  Nitrocefin is a chromogenic β-lactamase substrate that undergoes colour change from yellow to red as the amide bond in the β-Lactam ring is hydrolyzed by β-lactamase. Nitrocefin undergoes colour chang es induced by lactamases produced by Gram-positive and Gram-negative bacteria. Several studies have utilized the colour changing properties of Nitrocefin for the detection of β-lactamase activity from bacterial cell extracts by isoelectric focusing and spectroscopy. Nitrocefin has also been used in studies involving β-lactamase resistant antibiotics.

• 製造方法

  Nitrocefin is a key reagent for high and low throughput assays of the activities of penicillin-binding proteins (PBPs) and β-lactamases, the former used for discovery of antibiotics and the latter for inhibitors of resistance determinants for β-lactam antibiotics. This compound is commercially available but is prohibitively expensive because of the circuitous routes to its synthesis. We describe herein a three-step synthesis of nitrocefin that gives an overall yield of 44%. This is a practical route to the synthesis of this key reagent for drug discovery.
  A Practical Synthesis of Nitrocefin

• 生物学の機能

  In determination of b-lactamase activity in biological samples.
  Nitrocefin is a colorless or faint yellow cephalosporin antimicrobial that is hydrolyzed rapidly by most beta-lactamases.The hydrolysis product is pink.The bacterium to be tested is applied to a paper disk containing nitrocefin. A pink color developing within minutes (positive test) indicates a beta-lactamaseproducing bacterium.

(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 上流と下流の製品情報

(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 生産企業

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(6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 スペクトルデータ(MS)

41906-86-9, (6R)-3-[(E)-2-(2,4-ジニトロフェニル)エテニル]-8-オキソ-7α-[(2-チエニルアセチル)アミノ]-5-チア-1-アザビシクロ[4.2.0]オクタ-2-エン-2-カルボン酸 キーワード