Flores-Alamo, Marcos published the artcileAnorectal drug products for over-the-counter human use; tentative final monograph, COA of Formula: C17H28ClNO3, the publication is Federal Register (1988), 53(157), 30756-84, database is CAplus.
Components of over-the-counter anorectal products suitable for external (topical) or intrarectal administration and allowed combinations of active ingredients and their labeling are given under the Federal Food, Drug, and Cosmetic Act. Classes of active ingredients include: local anesthetics, vasoconstrictors, protectants, analgesics, anesthetics, antipruritics, astringents, and/or keratolytic agents.
Federal Register 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 C12H10BFO3, COA of Formula: C17H28ClNO3.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem