Oddon, Gilles et al. published their research in Tetrahedron Letters in 1993 | CAS: 60221-37-6

2-(2-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethoxy)ethoxy)ethan-1-ol (cas: 60221-37-6) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).COA of Formula: C11H22O5

Silacrown ethers: synthesis of macrocyclic diphenylpolyethylene glycol mono- and disilanes was written by Oddon, Gilles;Hosseini, Mir Wais. And the article was included in Tetrahedron Letters in 1993.COA of Formula: C11H22O5 This article mentions the following:

New mono- and disilacrown ethers I–IV [[k]OlSim: (k,l,m) = (8,3,1); (11,4,1); (16,6,2); (22,8,2), resp.] were prepared by reacting Ph2SiCl2 with HO(CH2CH2O)nH (n=2, 3) in the presence of base. Variation of the bases revealed that cations could act as templates and thus orient the synthesis towards the mono- or the disilanes. In the experiment, the researchers used many compounds, for example, 2-(2-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethoxy)ethoxy)ethan-1-ol (cas: 60221-37-6COA of Formula: C11H22O5).

2-(2-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethoxy)ethoxy)ethan-1-ol (cas: 60221-37-6) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).COA of Formula: C11H22O5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem