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. Author manuscript; available in PMC: 2012 Mar 3.
Published in final edited form as: J Phys Chem B. 2011 Feb 4;115(8):1889–1894. doi: 10.1021/jp109590t

Table 1.

Wavelength maximum (λmax) and extinction coefficient maximum (εmax at λmax) determined from electronic absorption spectra of guanine and 6-thioguanines at ambient temperature

Compound Solvent λmax, nm εmax, M−1 Cm−1
Guanine pH 10 NaOH 273 1.1×104
6-TG pH 10 NaOH 337 1.8×104
6-TG pH 7.4 Tris buffer 340 2.1×104
6-thioguanosine pH 10 NaOH 320 1.8×104
6-thioguanosine pH 7.4 Tris buffer 342 2.0×104