英文名：ICG maleimide
ICG-MAL
CAS：2143933-81-5
分子式: C51H56N4O6S
分子量: 853.09
外 觀：綠色粉末
溶解度：二氯甲烷
純 度：95%+
結(jié)構(gòu)式：
編輯搜圖
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西安凱新生物科技有限公司是國(guó)內(nèi)業(yè)PEG供應(yīng)商，可以提供不同分子量的PEG衍生物，小分子PEG的循環(huán)節(jié)可以做到1-36個(gè)，高分子PEG分子量從1000-40000不等，可以修飾的基團(tuán)有：氨基類，NHBOC類，F(xiàn)moc類，羧酸類，Mal類，NHS類，疊氮類，DBCO類，Cy3/Cy5/Cy7類，THP類，芐基類，丙炔基類，溴代類，丙酸叔丁酯類，乙酸叔丁酯類，甲基類，磺酸酯類，巰基類，產(chǎn)品純度高達(dá)98%以上，我公司憑借業(yè)的技術(shù)，誠(chéng)信的經(jīng)營(yíng)和不斷創(chuàng) 新的精神而發(fā)展壯大，在發(fā)展的同時(shí)不忘不斷總結(jié)不斷優(yōu)化為客戶的服務(wù)，視客戶取得成功為己任，力求將的產(chǎn)品、優(yōu) 質(zhì)的服務(wù)奉獻(xiàn)給我們的客戶。
ICG is a tricarbocyanine-type dye with NIR-absorbing properties (peak absorption around 800 nm) and emission maximum at 807 nm (10% v/vDMSO/PBS). Little absorption in the visible range accounts for the low autofluorescence, tissue absorbance, and scattering at NIR wavelengths (700-900 nm).
The maleimide of the ICG dye offers the opportunity to develop optimal conjugates. Maleimide active group provides an efficient and convenient way to selectively link ICG dye to sulfhydryl groups (free thiol, R-SH) on various substrates (antibodies[1], peptides, proteins, oligonucleotides, small molecule drugs etc.) at neutral (physiological) pH without any activation. Maleimides have very low reactivity with amines, alcohols, and phenols (incl. tyrosine and histidine) and do not react with histidine and methionine thus providing very high labeling selectivity.
It has been reported that conjugation to some antibodies may cause decrease in fluorescence intensity of ICG bound to antibody due to the formation of H-dimers4. However, fluorescence is restored after cell binding and internalization, which can be used to design an activatable NIR fluorescent probe. Fluorescence intensity of the unbound ICG-antibody conjugate can be dramatically increased (up to 50-fold) by addition of SDS and β-mercaptoethanol, which diminishes π- π stacking5.
ICG NHS ester的NHS可以和蛋白、多肽或抗體上面的NH2發(fā)生反應(yīng)鏈接到一起。
ICG-maleimide的馬來酰亞胺可以和蛋白、多肽、小分子或抗體上的SH巰基反應(yīng)連接。
ICG-Amine的NH2可以和蛋白、多肽小分子上面的NHS反應(yīng)連接起來。
ICG和PEG鏈接可在體內(nèi)長(zhǎng)循環(huán)。
近紅外熒光染料Near IRDyes激發(fā)和發(fā)射波長(zhǎng)和顏色圖：
ICG NHS ester的NHS可以和蛋白、多肽或抗體上面的NH2發(fā)生反應(yīng)鏈接到一起。
ICG-maleimide的馬來酰亞胺可以和蛋白、多肽、小分子或抗體上的SH巰基反應(yīng)連接。
ICG-Amine的NH2可以和蛋白、多肽小分子上面的NHS反應(yīng)連接起來。
ICG和PEG鏈接可在體內(nèi)長(zhǎng)循環(huán)。
ICG衍生物產(chǎn)品：
ICG NHS ester
ICG Vinylsulfone
ICG isothiocyanate
ICG Carboxlaic acid ICG-COOH
ICG-Maleimide/ICG-MAL/CAS:2143933-81-5/
ICG amine ICG-NH2
ICG thiol ICG-SH
ICG dichlorotriazine
ICG Hydrazide ICG-HZ
ICG alkyne ICG-alk
ICG Avidin ICG-Avidin 功能化ICG修飾親和素
ICG Biotin ICG-Biotin
mPEG-ICG
ICG-PEG-NH2
ICG-PEG-COOH
ICG-PEG-MAL
ICG-PEG-NHS
ICG-PEG-N3 疊氮PEG化修飾標(biāo)記熒光染料
