The author of 《A Novel Fluorescence Sensor Towards Hydrazine in Living Cells》 were Wang, Jinjin; Guo, Jing; Dou, Lili; Wang, Rui; Song, Yan; Yang, Qingbiao; Du, Jianshi; Li, Yaoxian. And the article was published in Chemical Research in Chinese Universities in 2019. Computed Properties of C4H7BrO2 The author mentioned the following in the article:
By a simple one-step reaction, a new fluorescein-based probe, 3′-hydroxy-3-oxo-3H-spiro[isobenzofu-ran-1,9′-xanthen]-6′-yl-4-bromobutanoate(FLB), was designed and synthesized. Relative to other cations, anions or amines, the probe exhibited high sensitivity and specificity towards hydrazine with approx. 40-fold fluorescence enhancement at 515 nm. The detection limit(DL) was calculated to be 2.87×10-8 mol/L, which was about 10 times lower than maximum allowable level of hydrazine(3.12×10-7 mol/L) in drinking water permitted by the US Environment and Protection Association(EPA). Simultaneously, through mass spectroscopy and proton NMR titration, the detection mechanism was further confirmed. Eventually, due to the low cytotoxicity and excellent water solubility, FLB could be employed to detect hydrazine in living cells. In the experiment, the researchers used 4-Bromobutanoic acid(cas: 2623-87-2Computed Properties of C4H7BrO2)
4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).Computed Properties of C4H7BrO2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary