Yao, Miao et al. published their research in Liquid Crystals in 2018 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides can be freed from solvent or water by drying below their melting points. These purifications can also be used for sulfonamides and acid hydrazides.Name: 1,3-Dicyclohexylurea

Synthesis and properties of new non-symmetric liquid crystal dimers containing mandelic acid and cyano group was written by Yao, Miao;Chen, Xin-shi;Dong, Liang;Wan, Xin-yi;Xian, Yu-pei;Yao, Dan-shu;Hu, Jian-she;Tian, Mei. And the article was included in Liquid Crystals in 2018.Name: 1,3-Dicyclohexylurea This article mentions the following:

Four non-sym. dimers containing mandelic acid as the chiral core I [R = H, cyano, (4-cyanophenyl)], II were synthesized. Chem. structures and liquid crystal (LC) properties of the dimers were characterised by FTIR, 1H-NMR, differential scanning calorimetry (DSC), thermogravimetric anal. (TG) and polarised optical microscopy (POM). The results indicated that the rigidity and conformation of the mols. of the dimers played important effects on their mesophase properties. I [R = H] did not display any mesophase, I [R = cyano, (4-cyanophenyl)] exhibited nematic (N) phases, while II displayed cholesteric (ch) phase, which indicated that chiral mandelic acid could induce cholesteric phase, but some attention should be paid to the mol. conformation to obtain cholesteric phase. For the four dimers, melting temperature (Tm) increased first and then decreased, inferring that mol. conformation played a more important effect besides mol. weight and rigidity. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Name: 1,3-Dicyclohexylurea).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides can be freed from solvent or water by drying below their melting points. These purifications can also be used for sulfonamides and acid hydrazides.Name: 1,3-Dicyclohexylurea

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics