The author of 《Integrated pyrazolo[1,5-a]pyrimidine-hemicyanine system as a colorimetric and fluorometric chemosensor for cyanide recognition in water》 were Tigreros, Alexis; Rosero, Hernan-Alejandro; Castillo, Juan-Carlos; Portilla, Jaime. And the article was published in Talanta in 2019. Computed Properties of C5H13NO2 The author mentioned the following in the article:
A new probe for cyanide detection based on the integrated pyrazolo[1,5-a]pyrimidine-hemicyanine (PpHe) system was synthesized in an efficient and straightforward manner using microwave-assisted heating. Photophys. studies in a 100% aqueous solution demonstrated high cyanide selectivity and detection limits as low as 600 and 86 nmol/L for UV-vis absorption and fluorescence emission, resp. Both values are <<1900 nmol/L, which is the maximum concentration permitted for drinking water by the WHO. HRMS anal. and NMR experiments were performed to confirm the mechanism of detection based on blocking the ICT phenomenon via nucleophilic addition of CN- on the C=N+ bond (iminium salt moiety) of the probe. In addition to this study using N,N-Dimethylformamide Dimethyl Acetal, there are many other studies that have used N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5Computed Properties of C5H13NO2) was used in this study.
N,N-Dimethylformamide Dimethyl Acetal(cas: 4637-24-5) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Computed Properties of C5H13NO2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem