狠狠色丁香久久综合婷婷亚洲成人福利在线-欧美日韩在线观看免费-国产99久久久久久免费看-国产欧美在线一区二区三区-欧美精品一区二区三区免费观看-国内精品99亚洲免费高清

英文名：ICG maleimide

     ICG-MAL

中文名：吲哚菁綠-馬來酰亞胺

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%+

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)長循環(huán)。

供應(yīng)商：陜西新研博美生物科技有限公司

TELE： 請(qǐng)點(diǎn)擊此處進(jìn)入陜西新研博美生物科技有限公司展臺(tái)查看

MOBLE：請(qǐng)點(diǎn)擊此處進(jìn)入陜西新研博美生物科技有限公司展臺(tái)查看