The UV absorption maxima of purified KB425796-A occurred at 280 and 290nm, and a molecular ion peak at m/z 1619 ([MþH]þ) was detected in the ESI-MS spectrum
The UV absorption maxima of purified KB425796-A occurred at 280 and 290nm, and a molecular ion peak at m/z 1619 ([MþH]þ) was detected in the ESI-MS spectrum