The author of 《Aldehydes can switch the chemoselectivity of electrophiles in protein labeling》 were Adusumalli, Srinivasa Rao; Rawale, Dattatraya Gautam; Rai, Vishal. And the article was published in Organic & Biomolecular Chemistry in 2018. Quality Control of Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate The author mentioned the following in the article:
We show that the chemoselectivity of an electrophile in protein labeling can be promiscuous. An aldehyde enables switching of chemoselectivity of an epoxide and a sulfonate ester along with an enhanced rate of reaction. The chem. technol. renders single-site installation of diverse probes on a protein and delivers anal. pure tagged proteins. After reading the article, we found that the author used Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate(cas: 152942-06-8Quality Control of Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate)
Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate(cas: 152942-06-8) belongs to esters. Esters are more polar than ethers but less polar than alcohols. Quality Control of Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics