Yao, Qian-Yuan et al. published their research in Huaxue Xuebao in 1980 | CAS: 3903-40-0

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 3903-40-0

Synthesis of dl-muscone by acyloin cyclization was written by Yao, Qian-Yuan;Chen, Xue;Gao, Zhao-Yun;Zhao, Wen-Zhi. And the article was included in Huaxue Xuebao in 1980.Application of 3903-40-0 This article mentions the following:

dl-Muscone (I) was prepared in 9 steps from cyclohexanone and NCCH2CO2Et by acyloin cyclization of di-Me β-methylpentadecanedioate, which was prepared by anodic coupling of HO2C(CH2)12CO2Me with HO2CCH2CHMeCH2CO2Me. I was separated from its isomer II by silica gel column chromatog. The I:II ratio in the product was 7:3. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Application of 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Application of 3903-40-0

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