L66
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
—A crown ether coated on a 5-µm particle size silica gel substrate. The active site is (S)-18-crown-6-ether.
[Note—Available as Crownpak CR(+) from www.chiraltech.com.]
