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Substance: bethanidine sulfate				Other Names: 1-benzyl-2,3-dimethyl-guanidine, sulfuric acid

Formula: C20H32N6O4S					CAS-No.: 114-85-2	PubChem: CID 

Study: UV absorption spectrum

                
Authors: A.G. Davidson 

Title: Effects of temperature variation on the zero, second and fourth derivative ultraviolet absorption spectra of benzenoid drugs

Journal/Source: Analyst, 108, 728-732, (1983); DOI: 10.1039/AN9830800728 


Data: table, diagram

Energy/Wavelength range: 225 - 280 nm

Resolution: 

Temperature: 293 K

Temperature dependence: yes

Pressure/Concentration: 500 µg ml-1

Phase: aqueous solution

pH: 


Comments: The effect of temperature in the range 0–40 °C on the absorbance at three wavelengths of maximum absorption and two wavelengths 
of minimum absorption in the zero-order ultraviolet absorption spectra and on the second- and fourth-derivative amplitudes of eight 
benzenoid drugs, displaying fine vibrational structure in the region 250-270 nm, was studied.

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