Thoma, Karl published the artcileStudies to determine the critical micelle concentration of local anesthetics, Name: 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, the publication is Acta Pharmaceutica Fennica (1984), 93(2), 85-96, database is CAplus.
The critical micelle concentrations of local anesthetics such as cyclomethycaine sulfate [6202-05-7], Psicaine-neu-HCl [69343-45-9], cocaine-HCl [53-21-4], etc., were determined by using tensiometry and potentiometry and spectrophotometry of some anesthetics. The nonionic polidocanol [9002-92-0] had a critical micellar concentrations of 1 × 10-4 mol/L found both by tensiometry and dye sorption methods. The dissociating local anesthetics show critical micelle concentrations from 0.046-5.5% in aqueous solution
Acta Pharmaceutica Fennica published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C18H34N4O5S, Name: 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem