Xuechao Song

3 Questions 5 Answers 0 Followers

Questions related from Xuechao Song

What is the LC-MS spectrum difference between a hydrate and an anhydrate compound?

I have a compounds 2'-Deoxyguanosine monohydrate, C10H13N5O4.H2O, with monoisotopic Mass of 285.1073, I wonder if it has the same mass spectrum with 2'-Deoxyguanosine (267.0968)?

04 August 2020 2,458 7 View

When using UPLC-Q-TOF-MS, why the mass spectra of some standards has a ion of [2M+85]?

When using UPLC-Q-TOF-MS, the mass spectra of some standards has a ion of [2M+85], I want to know what is the structure the [85] represents? I attach the mass spectrum of Diisopropyl phthalate...

27 June 2020 9,068 0 View

How to judge the position of glycosyl group (such as glucoside, galactoside) on the flavonol?

the glycosyl group usually on C3 and C7, when identifying the flavonol by UPLC-Q-TOF-MS, can we judge the position of glycosyl group based on the mass spectra?

24 March 2020 1,636 4 View