4-(4-Hydroxyphenyl)-2-butanone,

This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition

Issued and maintained by the United States Pharmacopeial Convention (USP)

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C₁₀H₁₂O₂                 164.20   CAS RN^®: 5471-51-2.-White powder.

Assay: Inject an appropriate volume into a gas chromatograph (see Chromatography (621)) equipped with a flame-ionization detector, helium being used as the carrier gas. The following conditions have been found suitable: a 0.25-mm x 30-m capillary column coated with a 1-µm layer of phase G43; the injection port temperature is maintained at 280°; the detector temperature is maintained at 300°; the column temperature is maintained at 180° and programmed to rise 10° per minute to 280°. The area of the C₁₀H₁₂O₂ peak is not less than 98.5% of the total peak area.

MELTING RANGE (741); between 81° and 87°.