니트로세핀
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니트로세핀 속성
- 녹는점
- 103-113° (dec); mp 167-169° (dec) (Lee)
- 알파
- D20 -224° (c = 1.0 in dioxane)
- 끓는 점
- 872.0±65.0 °C(Predicted)
- 밀도
- 1.67±0.1 g/cm3(Predicted)
- 저장 조건
- 2-8°C
- 용해도
- DMF: 20 mg/ml; DMSO: 20 mg/ml; DMSO:PBS (pH 7.2) (1:20): 0.04 mg/ml
- 물리적 상태
- 결정성 고체
- 산도 계수 (pKa)
- 2.50±0.50(Predicted)
- 색상
- Yellow to orange
- 안정성
- 흡습성, 용액 내 불안정
- InChIKey
- LHNIIDJCEODSHA-OQRUQETBSA-N
- SMILES
- N12[C@@]([H])([C@H](NC(CC3SC=CC=3)=O)C1=O)SCC(/C=C/C1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O)=C2C(O)=O
니트로세핀 C화학적 특성, 용도, 생산
개요
The generation of β-화학적 성질
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).
용도
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.제조 방법
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
Biological Functions
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.
니트로세핀 준비 용품 및 원자재
원자재
5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-(hydroxymethyl)-8-oxo-7-[[2-(2-thienyl)acetyl]amino]-, diphenylmethyl ester, (6R,7R)-
(6R,7R)-3-(Chloromethyl)-8-oxo-7-[[2-(2-thienyl)acetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid (4-Methoxyphenyl)methyl Ester
Hydroxymethyl-7-Aminocephalosporanic acid
7-아미노세팔로스포란산
2-티오펜아세틸 염화물
준비 용품
니트로세핀 공급 업체
글로벌( 113)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Shanghai QiXin New Materials Technology Co.,Ltd | +8615116235351 |
derrickguo@sh-qixin.cn | China | 16 | 58 |
Changsha YuTeng New Materials Co., Ltd. | +86-13487087296 +86-13787794286 |
rainbowz@cs-yuteng.com | China | 11 | 58 |
AFINE CHEMICALS LIMITED | +86-008657185134551 +86-18958018566 |
sales@afinechem.com | China | 15394 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
sales@capotchem.com | China | 29798 | 60 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
Antai Fine Chemical Technology Co.,Limited | 18503026267 |
info@antaichem.com | CHINA | 9641 | 58 |
TargetMol Chemicals Inc. | +1-781-999-5354 +1-00000000000 |
marketing@targetmol.com | United States | 19892 | 58 |
Hubei Ipure Biology Co., Ltd | +8613367258412 |
ada@ipurechemical.com | China | 10326 | 58 |
Career Henan Chemica Co | +86-0371-86658258 +8613203830695 |
laboratory@coreychem.com | China | 30250 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 |
sales@tnjchem.com | China | 34571 | 58 |