Thompson, W. E. published the artcileIdentification of primary, secondary, and tertiary pharmaceutical amines by the infrared spectra of their salts, Safety of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, the publication is Journal of Pharmaceutical Sciences (1965), 54(12), 1819-21, database is CAplus.
The spectra of 80 pharmaceutically active amine salts have been analyzed in the range of 4000-2000 cm.-1 The amine salts have characteristic absorption bands in this region. The wave numbers at which these absorption bands occur are specific for each given class of amine. Spectra and structure correlations and assignments of these bands are given and discussed.
Journal of Pharmaceutical Sciences 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 C14H12O2, Safety of 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem