Schulz, Elisabeth et al. published their research in Pharmazie in 1983 | CAS: 10203-58-4

Diethyl isobutylmalonate (cas: 10203-58-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. HPLC of Formula: 10203-58-4

Synthesis and some pharmacological properties of alkyl esters of various ω-phenyl DL-amino acids was written by Schulz, Elisabeth;Sprung, W. D.;Kroening, G.. And the article was included in Pharmazie in 1983.HPLC of Formula: 10203-58-4 This article mentions the following:

DL-Ph(CH2)mCH(NH2)(CH2)nCO2R.HCl (I; m = 0, n = 0, 1, 2; m = 2, n = 0; R = straight- or branched-chain alkyl) (28 compounds) were prepared by esterification of the corresponding acids. Spasmolytic activities were determined in vitro and found to correlate with the length of the carbon chain in the mol. In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4HPLC of Formula: 10203-58-4).

Diethyl isobutylmalonate (cas: 10203-58-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. HPLC of Formula: 10203-58-4

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