Not official USP-NF text
HYDROCORTISONE BUTYRATE
PF LGS# Brand Type of Test Additional Information
10(6) L1 Supelcosil LC-18 Assay Alternative column.
10(6) L1 MicroBondapak C18 Assay and Limit of . . . . Limit of hydrocortisone 21-butyrate and other related impurities.
25(5) L1 Hypersil-ODS Chromatographic purity 10-cm, 3-µm.