活化酯

Primary or secondary amino groups are ubiquitous in biomolecules. They are present in proteins and peptides as ε-amino groups of lysines and N-terminal amino groups. Many natural and synthetic small molecules are amines, and DNAs with amino groups can be prepared by solid phase synthesis, and enzymatically.

Amino groups can be modified by acylation with various activated carbonyl compounds. Among these compounds, activated N-hydroxysuccinimide esters are most suitable for biolabeling and bioconjugation applications.

NHS ester coupling chemistry

Compared to other activated esters, NHS derivatives possess good stability in aqueous environment. Optimal pH for the coupling of amines with NHS esters in aqueous buffers is 8.3-8.5. Labeling is also possible in organic solvents. Polar aprotic solents, such as DMF or DMSO, are preferred. One equivalent of tertiary amine base, such as triethylamine, or diisopropylethylamine (DIPEA) is necessary to achieve efficient amine acylation in non-aqueous solution.

3-馬來醯亞胺丙酸NHS-酯 (3-Maleimidopropionic acid NHS-ester)

具有胺反應性琥珀醯亞胺酯和巰基反應性的馬來醯亞胺基團的雙功能交聯劑。
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貨號 數量 價格 交貨時間
3419-100mg 100 mg –   現貨
3419-500mg 500 mg $110 現貨
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Alkyne-PEG2-NHS ester

Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on diethyleneglycol (PEG2).
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貨號 數量 價格 交貨時間
2219-1g 1 g $450 現貨
2219-5g 5 g $980 現貨
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Alkyne-PEG3-NHS ester

Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on triethyleneglycol (PEG3).
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貨號 數量 價格 交貨時間
2298-1g 1 g $490 現貨
2298-5g 5 g $980 現貨
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Alkyne-PEG4-NHS ester

Bifunctional hydrophilic linker with NHS ester and terminal alkyne functional group based on tetraethyleneglycol (PEG4).
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貨號 數量 價格 交貨時間
2409-100mg 100 mg $250 現貨
2409-1g 1 g $790 現貨
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ATFB SE(N-琥珀酰亞胺基 4-疊氮四氟苯甲酸酯) [ATFB SE (N-Succinimidyl 4-Azidotetrafluorobenzoate)]

N-Succinimidyl 4-AzidotetrafluBenzate (ATFB SE, ATFB-OSu) 是一種光激活連接劑,是用於研究生物受體的通用標記試劑。
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貨號 數量 價格 交貨時間
2574-250mg 250 mg $146 現貨
2574-1g 1 g $420 現貨
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Azide-PEG6-NHS ester

A hydrophilic bifunctional linker with azide and NHS ester function groups flanking PEG6 (hexaethylene glycol).
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貨號 數量 價格 交貨時間
3692-250mg 250 mg $325 現貨
3692-1g 1 g $539 現貨
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疊氮基丁酸 NHS 酯 (Azidobutyric acid NHS ester)

活化的NHS 酯用於多肽和蛋白質的疊氮基標記。
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貨號 數量 價格 交貨時間
53720 50 mg $110 現貨
63720 100 mg $210 現貨
73720 1 g $950 現貨
83720 5 g 請查詢 現貨
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Biotin-PEG4-NHS ester

PEG4-containing activated ester for simple and efficient biotin labeling of antibodies, proteins, and other primary amine-containing biomolecules.
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貨號 數量 價格 交貨時間
2893-100mg 100 mg $145 現貨
2893-1g 1 g $590 現貨
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生物素-XX-NHS酯 (Biotin-XX-NHS ester)

生物素衍生物,長的間隔基可減少空間效應,可通過與伯胺反應與氨基酸、肽或蛋白質結合。
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貨號 數量 價格 交貨時間
2897-100mg 100 mg $225 現貨
2897-1g 1 g $670 現貨
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DBCO-NHS 酯

偶氮二苯並環辛炔 (DBCO、ADIBO) 試劑用於應變促進的無銅點擊化學 (SPAAC)。該試劑含有 NHS 酯官能團,用於將環辛炔連接到各種分子上。
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貨號 數量 價格 交貨時間
34720 10 mg $80 現貨
44720 25 mg $110 現貨
54720 50 mg $135 現貨
64720 100 mg $210 $178 現貨
94720 1 g $1000 $970 現貨
K4720 5 g $3570 $2990 現貨
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DBCO-PEG6-NHS ester

A heterobifunctional linker with DBCO and NHS ester function groups flanking PEG6 (hexaethylene glycol).
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貨號 數量 價格 交貨時間
3664-10mg 10 mg –   現貨
3664-50mg 50 mg $247 現貨
3664-100mg 100 mg $449 現貨
3664-1g 1 g $3490 5 天
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DBCO-STP酯 (DBCO-STP ester)

一種活化酯用於蛋白質/抗體/肽的修飾,引入到無銅點擊化學反應。
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貨號 數量 價格 交貨時間
2584-5mg 5 mg –   現貨
2584-10mg 10 mg $90 現貨
2584-25mg 25 mg $180 現貨
2584-100mg 100 mg $450 現貨
2584-500mg 500 mg $1700 5 天
2584-1g 1 g $3000 現貨
2584-5g 5 g 請查詢 現貨
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二琥珀酰亞胺戊二酸酯(DSG) [Disuccinimidyl glutarate (DSG)]

一個短的 5 原子(7.7 埃)間隔基的兩端分別帶有兩個 NHS 酯基同效雙功能交聯劑。
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貨號 數量 價格 交貨時間
4018-100mg 100 mg $95 現貨
4018-1g 1 g $410 現貨
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Exo-BCN-PNP

BCN-PNP 碳酸酯是一種通過氨基甲酸酯與底物伯氨基連接引入 BCN 基團的工具。
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貨號 數量 價格 交貨時間
4043-100mg 100 mg $280 現貨
4043-500mg 500 mg $990 現貨
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己酸NHS酯 (Hexynoic acid NHS ester)

己酸 NHS 酯,用於銅催化點擊化學中帶有炔基的生物分子標記。
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貨號 數量 價格 交貨時間
41720 25 mg $95 現貨
51720 50 mg $180 現貨
61720 100 mg $290 現貨
91720 1 g 請查詢 現貨
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Hexynoic acid STP ester

Alkyne activated ester for the modification of amine groups. STP ester group is an excellent alternative to NHS ester functionality.
顯示價格
貨號 數量 價格 交貨時間
569-25mg 25 mg $95 現貨
569-100mg 100 mg $185 現貨
569-500mg 500 mg $850 現貨
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戊烯酸STP酯 (Pentynoic acid STP ester)

一種活化酯, 用於將炔基引入肽/蛋白質和連結反應。
顯示價格
貨號 數量 價格 交貨時間
30720 10 mg $110 現貨
40720 25 mg $210 現貨
50720 50 mg $410 現貨
60720 100 mg $595 10 天
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TCO-PEG4-NHS酯(軸向異構體) [TCO-PEG4-NHS ester (axial isomer)]

一種異雙功能接頭,PEG4 (四乙二醇)側翼有反式環辛烯和 NHS 酯基團,用於標記抗體、蛋白質和其他含伯胺的生物分子。
顯示價格
貨號 數量 價格 交貨時間
3056-10mg 10 mg $145 現貨
3056-25mg 25 mg $225 現貨
3056-100mg 100 mg $550 現貨
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