Method for analyzing reactive low-molecular-weight compound contained in polyoxyethylene derivative
AssigneeNof Corporation
InventorsMasaki KAMIYA, Akira SUZUKI, Hiroki YOSHIOKA
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Abstract
The present invention provides an analysis method including separating a compound of the formula (1): contained in a polyoxyethylene derivative by reversed-phase chromatography, and detecting the compound with an ultraviolet visible spectrometer detector, in which ultraviolet light with a wavelength shorter than 200 nm as the detection wavelength is used, and an acidic substance with a maximum molar absorption coefficient of not more than 20 M−1cm−1 at 190 to 200 nm and a pKa of not more than 4 is used as an additive to the mobile phase for analysis.
Claims2
An analysis method comprising separating a compound of the formula (1):
- contained in a polyoxyethylene derivative by reversed-phase chromatography, and detecting the compound with an ultraviolet visible spectrometer detector, wherein ultraviolet light with a wavelength shorter than 200 nm as the detection wavelength is used, and an acidic substance with a maximum molar absorption coefficient of not more than 20 M−1cm−1 at 190 to 200 nm and a pKa of not more than 4 is used as an additive to the mobile phase for the analysis.
Dependencies are inferred from the claim text.